Question

How many numbers between 100 and 1000 can be
formed with the digits 5,6,7,8,9 if the repetition
of digits is not allowed ?
2018 (I)​

Answer 1

Answer:

5,6,7,8,9

only 3 digit numbers are possible so..

arranging 3 digits from 5 given digits :

=5P3 = 5 !/2!

= 5x 4 x 3 x 2 /2

= 60 numbers can be formed

HOPE IT HELPED UH !