TCS Company Numerical Ability Probability

In a deck of 52 cards, how many ways are there to select 13 Spade and 13 heart cards without repetition

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TCS Other Question

What is∑ 28 k=0 k^2(28Ck), where 28Ck is the number of ways of choosing k items from 28 items? A bag contains 1100 tickets numbered 1, 2, 3, ... 1100. If a ticket is drawn out of it at random, what is the probability that the ticket drawn has the digit 2 appearing on it?

A. 291/1100
B. 292/1100
C. 290/1100
D. 301/1100