Q. 45.0( 1 Vote )

# If n</

We know that if , then one of the following conditions need to be satisfied:

i. p = q

ii. n = p + q

From the problem we can say that,

10≠12

So, the condition(ii) must be satisfied,

n = 10 + 12

n = 22.

We need to find the value of

We know that ..... (1)

And also n! = n(n – 1)(n – 2)…………2.1

From (1)

The value of is 23.

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