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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