Question

How many subsets of three elements each exist in a set of six elements

Answer 1

Answer: Option 'B' is correct.

Step-by-step explanation:

Since we have given that

Total number of elements a set has = 6

Number of elements in each subsets has = 3

We need to find the number of subsets of three elements each exist in a set of 6 elements.

So, we will use "Combination ":

$^6C_3=C(6,3)=\dfrac{6!}{3!\times 3!}=20$

Hence, Option 'B' is correct.

Answer 2

Answer is B. C (6,3)