Question

If 1 / 9! + 1 / 10! = x / 11!, find the value of ''x''.

Answer 1

Answer:

1/9! + 1/10! = x/11!

1/9! + 1/10*9! = x/11!

1/9! { 1 + 1/10 } = x/11*10*9!

1+ 1/10 = x/11*10

11/10 = x/11*10

11 =x/11

11*11 = x

x = 121

hope u understand!!