Question

The question below has two statements, I and Impark your answer as
Find 25C10-
1. 24C14 = a
II. 24C9 = b

• A. Question can be answered by using any one statement alone, but not by using other statement alone.
• B. Question can be answered by using either of the statements alone.
• C. Question can be answered by using both the statements together, but it cannot be answered by using either of the statements alone.
• D. Question cannot be answered even by using both the statements together.

Answer 1

Answer: (B)

Question can be answered by using either of the statements alone.

Answer 2

The Formula = $\binom{n}{r} = \frac{r!(n - r)!}{n!}$
By using Pascal's Identity
= $\binom{n}{r} = \binom{n-1}{r} + \binom{n-1}{r-1}$
The correct option is (B)