Permutation & Combination Solved Questions For IBPS, SBI and Other Bank Exams - Page 2

You will find 19 problems in 5 pages..

Permutation & Combination Solved Questions (Page 2 of 5)

Question 1

Four cycles are to be arranged in a row, in how many ways can be done?

a) 24 b) 20 c) 36 d) 16

Answer : a)24

Solution :

There are 4 cycles then n = 4,
And are arranged among themselves (r=4) in 4p4 ways.
we know that, npr = n! / (n - r)!
4p4 = 4!/(4 - 4)!
= 4!/0!
= 4!
= 1 x 2 x 3 x 4
= 24
Hence the required number of ways is 24.

Question 2

There are 3 number of fruits and are given to 4 number of children such that each gets atmost one. In how many ways this can be done?

a) 12 b) 28 c) 24 d) 36

Answer : c)24

Solution :

Three number of fruits are given to 4 number of children where each gets atmost one in npr ways where n = 4 and r = 3
we know that, npr = n! / (n - r)!
Here, 4p3 = 4!/(4 - 3)!
= 4!/1!
= 4!
= 24
Hence the answer is 24ways.

Question 3

In how many ways can five children sit in a row of 5 chairs?

a) 120 b) 322 c) 162 d) 360

Answer : a)120

Solution :

Number of permutations of all 5 children taking 5 chairs at a time is 5p5.
5p5 = 5! / (5 - 5)!
= 5!/0!
= 5!/1
= 1 x 2 x 3 x 4 x 5
= 120
Hence the required number of ways is 120.

Question 4

Ten students are writing a test. In how many ways can three students among them can score first three places?

a) 120 b) 328 c) 916 d) 720

Answer : d)720

Solution :

Ten students are writing a test. The number of ways in which first three places can be won is 10p3 ways.
10p3 = 10!/(10 - 3)!
= 10!/7!
= 7! x 8 x 9 x 10 / 7!
= 8 x 9 x 10
= 720
Hence the required number of ways is 720.

Permutation & Combination Solved Questions (Page 2 of 5)

Prepare Fast And Score Well In SBI & IBPS, PO & Clerk Exams

Related pages

alligation and mixturesbi bank exam papersbanking exams sample paperssolved examples of permutation and combinationbodmas questions and answersverbal reasoning for bank examswhat are surds and indicesibps po exam preparationrule of allegation in mathsibps specialist officer 2014ssc bookstoresyllogism questiondeccan gramin banktypes of numbers venn diagrampermutation and combination word problemssbi exam preparation booksdeep water ports in indiatypes puzzlescomputer questions for ibpsmath question and answer for bank examsbi clerical testpermutation questionsibps salaryunit digits of powersbodmas questions and answershow to solve arithmetic progressioninequalities exam questionsmensuration problembanking ombudsman scheme 1995largest artificial lake in indiasyllogism practice questions with answersbank clerk exam model question paper with answersantonyms and synonyms for bank examscomputer awareness for bankingtmb i bankingbank clerk exam booksrbi examssimple interest and compound interest problemssbi po exam papersallahabad up gramin bankibps specialist officer 2014what does omr stand for in computersdivisibility questions and answerspandit ravi shankar affairsantonyms for improverecent ibps examupcoming ibps po examsbi technoparkevaluate surdstypes puzzlessbi bank po exam question papers with answersbank ibps pocomputer aptitude questionssyllogism questions and answerssolve cube root problemsibps clerk exam bookssbi banking ombudsmantypes puzzlesibps exam tipsratio and proportion tutorialsyllogism aptitudesbi bank papersirda questionspercentage profit and loss formulasjain questions and answers in hindimensuration testbanking abbreviationsmaths profit and loss questionsibps po examdifference between bearer cheque and order chequegk current affairrrb establishedhow to solve hcfinternational airport in kerala listsyllogism possibility rulesdivisibility problemsinternational airports in madhya pradeshgrameen vikas banksbi bank exam papers with answersmahila diwas