9 Better ways to say "A lot of" in English #shorts

Find the number of ways of selecting 4 English, 3 Telugu and 2 Hindi books out of 7 English, 6 Telugu and 5 Hindi books.

In how many ways can the letters of the English alphabet be arranged so that there are seven letters between the letters A and B ?

How many such pairs of letters are there in the word GRANDEUR each of which has as many letters between them in the word as in the English alphabet (considering both ways).

How many such pairs of letters are there in the word MACHINE each of which has as many letters between them in the word as in the English alphabet (considering both ways).