Question

in how many ways can the letter of the word mumbai be arranged?

Answer 1

Answer:-

60

Explanation:-

Hi,

Suppose A is always next to B, then we can treat BA together in every

arrangement as 1.

Since there are 2 M's , 1 U , 1 I , and 1 BA group , we can arrange all

these 5 in 5! ways and since M is repeating twice we need to divide

by 2!, since all permutation between 2 M's will repeat in the same

arrangement. So, total number of ways are 5!/2! = 60

So different ways the letter of word MUMBAI can be arranged so

so that A is always next to B are 60

Hope, it helps !