TCS Company Numerical Ability Probability

how many ways can a person send invitation cards to 6 of his friends if he has four servants to distribute the cards..?

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TCS Other Question

A sum of money is borrowed and paid back in two annual instalments of Rs.882 each allowing 5% C.I.The sum borrowed was:      A. Rs.1680      B. Rs.1142      C. Rs.640      D. Rs.1640 In how many ways can we distribute 10 identical looking pencils to 4 students so that each student gets at least one pencil?
A. 5040
B. 210
C. 84
D. None of these