Question

8 digit number are formed using the digits 1 1 2 2 2 3 4 4

Answer 1

$\huge\underline\mathfrak\purple{Solution}$

Greatest 8-digit number using 1 1 2 2 2 3 4 4 is 44322211.

Smallest 8-digit number will be 11222344.

Thanks!!❤

Answer 2

Step-by-step explanation:

There are 4 odd places and 3 even places.

Odd numbers are 1,1,3,3.

Odd numbers can be arranged in 4!2!.2! ways.

and

even numbers are 2,2,4, and even places are 3

Even numbers can be placed in 3!2! ways.

∴ The required no. of numbers = 4!2!.2!.3!2!

=6×3=18