If Set $A$ contains 8 elements, then number of subsets of $A$ which contain at least 6 elements is

The number of different permutations that can be formed by taking 4 letters at a time from the letters of the word 'REPETITION' is

The number of different ways of preparing a garland using 6 distinct white roses and 6 distinct red roses such that no two red roses come together, is

The number of ways a committee of 8 members can be formed from a group of 10 men and 8 women such that the committee contains at, most 5 men and atleast 5 women, is