Q2 of 140 Page 318

If, find the value of x.

To Find: Value of n


Given:


Formula Used: n! = (n) × (n-1) × (n-2) × (n-3) ………. 3 × 2 × 1


Now,


(4! = 24, 5! = 120)




⇒ x = 36


More from this chapter

All 140 →
6

In how many different ways can a garland of 16 different flowers be made?

 1

If (n + 1)! = 12 × [(n – 1)!], find the value of n.

 3

How many 3-digit numbers are there with no digit repeated?

 4

How many 3-digit numbers above 600 can be formed by using the digits 2, 3, 4, 5, 6, if repetition of digits is allowed?