Permutation & Combination

Dear Reader, Below you will find important formulas of permutation and combination problems. Following that you will find solved questions. These questions will help you in preparation for all bank exams including IBPS, SBI, RRB and other banks....
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...
Question 1 In how many ways, can the letters of the word "TELEVISION" be arranged? a) 907200 b) 1814400 c) 40320 d) none of these Answer : a) 907200 Solution : The word television contains 10 letters, namely one T, two E, one L, one V, Two I, one S...
Question 1 In how many different ways can the letters of the word 'SERVING' be arranged? a) 5040 b) 720 c) 120 d) 40320 Answer : a) 5040 Solution : There are 7 different letters in the word 'SERVING'. Therefore, the number of arrangements of the...
Question 1 In how many different ways can the letters of the word "CHARGES" be arranged in such a way that the vowels always come together? a) 1440 b) 720 c) 360 d) 240 Answer : a) 1440 Solution : The arrangement is made in such a way that the...
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