Monday, March 12, 2012

Exercise Problem (Number Sequence, Arithmetic Progression, n-th term, Summation of the first n terms of an arithmetic Progression, Geometric progression, n-th term of the series Summation of the first n terms of a geometric progression,)

10. Sum of consecutive integers is 18. What is the smallest integer less 3?
A) 2      B) 3      C) 4      D) 5       E) None
Sol: Let, the three consecutive integers be n, n+2. Hence
3n + 3 = 18 = 3n=15
                   = n = 5
                :. 5-3 = 2
Ans: (A)

11. The sum of 3 consecutive even integers is equal to 4 times the smallest. What is the smallest of the integers?
Sol: Let, the consecutive integers be
X, X+2, X+4
According to question,
X+X+2+X+X+4 = 4X
= 3X + 6 = 4X
= 4X- 3X = 6
= X = 6
:. The smallest integer is 6.
Ans: 6

12. If the average of 9 consecutive integers is 0, what is the average of the last 4 of the integers ?

Sol:  -4,-3,-2,-1,0,1,2,3,4
:. 1,2,3&4  Average = (1+2+3+4)/4
                                = 10/4
                                = 2.5
Ans: 2.5

13. If the average of 5 consecutive integers is 12, what is the sum of the smallest and the largest of the 5 integers?

Sol: Let, the numbers be
X,X+1, X+2, X+3, X+4,
:. X+X+1+ X+2+ X+3+ X+4 = 12x5
= 5X+10 = 60
= 5X = 60 -10 = 50
= X = 50/5 = 10
:. Sum of the smallest and the largest  number
= X+X+4
= 2X+4
= 2x10+4
= 24 (Ans)

14. The sum of the 3 consecutive odd numbers exceeds twice the largest number by 6, What is hte sum ob the 3 number?

Sol: Let, the three consecutive odd numbers be X, X+2, X+4
So, according to the problem
X+(X+2)+(X+4) = 2(X+4)+6.
Observe  that on the left side of the equation we have
odd + odd +odd
Since, three odd numbers added together is always odd, the L.H.S is odd.
On the T.H.S we have
2 x odd  + even = even + even = even
So, the R.H.S is even
Hence, this equation is invalid. This problem has no answer.
Ans: (D)

15. Sum of 15 consecutive odd numbers is 375. Which of the 15 odd numbers is the largest?
A) 39       B) 37      C) 35      D) 41      E) None

Sol: Let, the first number in the series be n . So, the others are n +2, n+4,......n+28.
So, their sum is
= 15n + 2(1+2+3+........+14)
= 15n+ 2. 14(14+1)/2 = 15(n + 14)
According to the problem,
15(n+14) = 375
or, n + 14 = 375/15 = 25
or, n = 25-14 = 11
The largest number is (n + 28) = 11 + 28 = 29
Ans: (A)

16. The average of 15 consecutive integers is 15. What is the smallest of the 15 integers?
A) 6      B) 7      C) 8      D) 9      E) 15

Sol: Let, X be the 1ts integer. So, (X+14) is the last one. Hence, we can write

{(X+(X+1)+(X+2)+.......+(X+14)}/15 = 15
or, {15X+(1+2+............+14)}/15  = 15
or, X + {14(14+1)}/2.15  = 5
or, X+7 = 15
or, X = 15-7 = 8
Ans: (C)

17. Find the next number in the series: 

Sol: 3        6        4        9        5        12        6        15        7        18        8
Ans: 15

18. In a triangular seating area, the seats are arranged in rows so that the 1th , 2th , 3rd, 4th, etc. Rows contain 1,2,3,4 etc. seats and so on. 70 students take seat starting from the first row & filling up the rows in incre3asing order. How many rows are completely filled?
 A) 9      B) 10      C) 11      D) 12      E) None

Sol: If 1 row is completely filled we have 1 student
Of  2 rows are     "               "      "      "   1+2 = 3 student
But going like this is not very efficient. So, let us assume that 11 rows are completely filled. So, let us assume that 11 rows are completely filled. So no.  of students is
1+2+3+...............+11 = 11(11+1)/2 = 11x12/2
                                                         = 66
Since 66< 70, This means that 11 rows are completely filled & the last row contains 4 student.
Ans: (C)

19. What is the next number in the series 1, 11, 27, 57,.......?
A) 123      B) 113      C) 93      D) 63      E) None
Sol: The answer is (E) since there is no definite pattern among the given numbers.

Number Series - Logical Reasoning Questions and Answers - IndiaBIX‎ Where can I get Logical Reasoning Number Series questions and answers with ... on Number Series by practicing the objective type exercises given below, also ... Type 2 - ‎Type 4 - ‎Discuss in Forum - ‎Type 3 Number Series Practice Set 4 | Do you need help with solving challenging number series problems? Learn how to ... (not rated). For more practice on number pattern and seqence, refer to:. Pre-Calculus: Sequences and Series Help & Problems | Information ... › ... › Math Help › Pre-Calculus‎ Find study help on sequences and series for pre-calculus. ... problems, and practice problems with solutions to help you learn sequences and series ... Introduction to Sequences and Series Formulas A sequence is an ordered list of numbers. Unit 13 Section 2 : Extending Number Sequences‎ They are called triangle numbers because they correspond to the number of dots ... Exercises. Work out the answers to the questions below and fill in the boxes. Numerical series tests available to download - Psychometric Success‎ These numerical series test questions usually consist of four visible numbers plus one missing number. ... Answers 1. B – The numbers double each time 2. A – Each number is the sum of ... Download Numerical Series Test - Practice Test 1. Number Series Test - Numerical Reasoning - JobTestPrep › Aptitude Tests › Numerical Reasoning‎ Learn about the number series test, one of the most popular numerical tests at ... Discover the largest collection of online practice materials at JobTestPrep. ... Learn about number series and number sequence tests, with sample questions and .... especially when giving the shortest ways of solutions of tasks, which helped to ... Problems in Mathematical Analysis 1: Real Numbers, Sequences ... › ... › Science & Mathematics › Mathematics › Calculus‎ This book is the first volume of a series of books of problems in mathematical analysis. ... and is divided into two parts: exercises and/or problems, and solutions. [PDF] Solutions to Practice Problems Exercise 1.14 Consider the ...‎ Solutions to Practice Problems. Exercise 1.14. Consider the sequence of numbers {a1,a2,···} defined recursively by a1 = 1 and an+1 = √. 2 + an for all n ∈ N. Questions on Algebra: Sequences of numbers, series and how to ... › Algebra › Sequences-and-series‎ (paid link). Click here to see problems AND answers on one page ... Question 230689: WHICH NUMBER COMES NEXT IN THIS SERIES:8,4,2,1,.5,.25,? Calculus/Sequences and Series/Exercises - Wikibooks, open books ...‎ The following exercises test your understanding of infinite sequences and series. ... the problem), the "Answer only" (what it sounds like), and finally a "Full solution" ... Since the limit exists, it is the number to which the sequence converges Dynamic Programming Practice Problems - CSAIL People‎ Dynamic Programming Practice Problems ... To view the solution to one of the problems below, click on its title. ... Given a sequence of n real numbers A(1) . Arithmetic Sequences Problems with Solutions Arithmetic Sequences Problems with Solutions. A set of problems and exercises involving arithmetic sequences, along with detailed solutions and answers, are ... Practice with Arithmetic and Geometric Sequences‎ Practice with Arithmetic and Geometric Sequences. ... Look carefully at each question to determine with "which" sequence you are working. You may wish to ... Problems in Mathematical Analysis I: Real Numbers, Sequences‎ The book covers three topics: real numbers, sequences, and series, and is divided into two parts: exercises and/or problems, and solutions. Specific topics ... Questions on Algebra: Sequences of numbers, series and how to ... › Algebra › Sequences-and-series‎ ... students' questions. Click here to see problems AND answers on one page ... 236 my teacher wants me to do all the even numbers on the practice and apply. IXL - Algebra practice‎ Practice math online with unlimited questions in more than 200 algebra math skills. ... Number sequences ... U.1 Is (x, y) a solution to the system of equations? End of chapter exercises - Everything‎ The total amount of money that the school will receive if all 20 questions are answered correctly. ... is a set of numbers, the first three of which form an arithmetic sequence, and the .... We are interested in the smallest positive integer solution. Missing Number in a Sequence - AAA Math‎ An interactive math lesson about completing a numerical sequence. ... in a sequence. Determine if the order of numbers is ascending (getting larger in value) or descending (becoming smaller in value). ... Practice ... How many correct answers can you get in 60 seconds? ... Frequently Asked Questions · Send Us Feedback. [PDF] SEQUENCES; nth terms,%20nth%20terms.pdf‎ The formula 3n - 1 generates a sequence of numbers as follows: ... GCSE questions in this area will provide us with a sequence of numbers and ... To check that our solution to the above example is correct, why don't we ask the ... Exercise 1. [PDF] MISS booklet (Mathematical induction, sequences and series)‎ Series. 21. Power Series. 24. Taylor Series. 28. These exercises will be covered in tutorials and ... questions to hand in each week. .... 1891) who did his most important work in the theory of prime numbers. Theorem. There is a solution with 2 n. Exercises in Number Sequences‎ Solution: a4 = 2 + (4 – 1)(3) = 2 + (3)(3) = 11 --- does this match the 4th term? Problems: What is the next number in the arithmetic sequence 3, 11, 19, 27, 35, ... Arithmetic Sequences and Series - Hotmath‎ 20+ items - Chapter:Sequences and SeriesSection:Arithmetic Sequences ... Problem: 1. Determine whether the sequence is arithmetic. Give reason for ... Problem: 5. Find the arithmetic mean of the given pair of numbers: [PDF] 2. INFINITE SERIES - SCIPP‎ of real numbers, so another definition for us would be that a sequence is a real- ... Solution. It is good to tackle this problem one piece at a time. First, notice that the ... In practice, we rarely use the formal definition of convergence for examples ... [PDF] Solutions to Exercises 4.1‎ Section 4.1 Sequences and Series of Complex Numbers ..... Note: While this was a good exercise in Cauchy products, it is not the most efficient way to prove ...... (b) The solution of the Dirichlet problem with boundary function f(θ) is given by. Pauls Online Notes : Calculus II - More on Sequences‎ ... E-Book Practice Problems, E-Book Practice Problems Solutions, E-Book Assignment Problems ... The number m is sometimes called a lower bound for the sequence. ... (c) [Solution]. Solution. (a). This sequence is a decreasing sequence (and ... that we don't get too used to relying on our intuition with these problems. The Fibonacci Sequence Problem: The Fibonacci... | › ... › engineering › computer science‎ The number of the sequencewill be provided in the command line. ... In the previous exercise, the child process must output theFibonacci sequence, since the parent ... Guided solutions for problems in 2,500+ textbooks; 24/7 study help from ... [PDF] PUTNAM TRAINING PROBLEMS, 2011 Exercises 1. Induction. 1.1 ...‎ Oct 21, 2011 - problems, the second one hints, and the solutions are in the third part. .... Let a1,a2,...,an be a sequence of positive numbers, and let b1,b2,...,bn ... Number Sequences - Primary Resources‎ Frequently Asked Questions. Send Feedback · Site Search ... Simple Number Sequences (Rebecca Hall) DOC; Number Sequences (Louise Kidd) DOC. Number ... [PDF] Number Patterns - Department of Basic Education‎ We generally refer to the first value (term) of a sequence by using the letter a, and the ..... values that are not whole numbers must be rejected as possible solutions. e.g. The sum ... Now earlier in this chapter we encountered a problem where we were given .... The only other unknown that we need to practice solving for is r. [PDF] Chapter 11: Sequences and Series -‎ In practice we cannot go on forever on a computer calculation, however we can keep ... problem requires. ... Gravitation did not allow an exact solution. ... sequence is real numbers and the outer function of the composite would need inputs of.

You Might Also Like

Related Posts Plugin for WordPress, Blogger...


Absolute Value Abstract Algebra Adding and Subtracting Decimals Addition in Columns Age Related Problem Algebra Algebra Number Theory Analyzing Sequence Arithmetic Mean Arithmetic Progression Brain Game Calculus Book Download Central Tendency Commutative Algebra Complex Variables Convert Fractions to Percents Convert Percents to Decimals Convert Percents to Fractions Counting Counting & Venn Diagram Decimal Number Decimals to Fraction Decimals-Fractions- Percentages Dicimal Number Differential Equation free book download Dispersion Dividing By Zero Dividing Decimals Divisibility Rules Equation Equation & Inequality Even and Odd Numbers Exercise (Counting & Venn Diagram) Exercise (Equation & Inequality) Exercise Problem Exercise(Equation & Inequality) Exponent & Logarithms Factorial Function Factorization Factors For computer Fractions Fractions to Decimal Free Book Free Math Book Download GCF General Representation of odd & even integer Geometric Mean Geometric progression Harmonic Mean Important Properties of number Line Inequalities Integer Introduction to Decimal LCM Linear Algebra Long Division Making a systematic List Math Software Download Math Tricks Measure of Variability Median Mixed Fractions Mode Multiples Multiplying Decimals N-th Term Natural Number Next Number of the series Number Line Number Sequence Number System Odd & Even Integers Ordering Decimals Ordering Numbers Partnership Photo Galary Place Value Preface Prime Factorization Prime Number Probability Proportion Quadratic equation Ratio Rational & Irrational Numbers Real Analysis book Download Real Number Remember Numbers Simplifying Fractions Solutions to Problems Solving equations Statistics Subtracting Decimals Summation of N term of arithmetic Summation of N term of Geometric Systems of liner equations The counting principle Time & work Using arithmetic to count Venn Diagram Whole Numbers Zero Zoomable Number Line

Design by Free WordPress Themes | Bloggerized by Lasantha - Premium Blogger Themes | Web Hosting Bluehost