Question

Let x1,x2,x3 and x4 are the digits chosen from the set {0,1,2,3,4,5} and satisfies x1<x2=x3<x4 . Number of 4 digits numbers that can be formed is​

Answer 1

Answer:

1000

No. will be max when denominator minimizes.

∴Minvalueofdenominator=1

∴x

1

=1,x

2

=0,x

3

=0,x

4

=0

∴

1+0+0+0

1000

=1000