How many odd numbers of three digits each can be formed from the digits 2,4,6 and 7 if repetition of digits is permitted?

A- 6

B- 27

C- 24

D- 16

No vote yet

1 vote

×

Problem Loading...

Note Loading...

Set Loading...

## Comments

Sort by:

TopNewestLet the three digit number be HTO. H and T can take any of the 4 values whereas O can be only 7. 4 x 4 = 16 possibilities.

Log in to reply

Correct!

Log in to reply

answer is D :) 16

Log in to reply

Yeap ofcrouse it answer will be 16 but could you explanation??

Log in to reply

third digit is seven as number is odd , for first and second digit 4 possibilities for both as repetition is allowed otherwise it would be 3 and 2 respectively, so as repetition is allowed we have 4x4x1=16 is the answer :)

Log in to reply

Comment deleted Oct 10, 2015

Log in to reply

And I think it is wrong :)

Log in to reply

I was thinking that repetition is not allowed.

Log in to reply