Question

You have 9 blank cards on each card you can write 1,3 or 5.how will you obtain total sum 25?

Answer 1

Given :

We have 9 blank cards on each card we can write 1, 3 or 5.

To find :

Obtain total sum of 25

Solution :

There are only 2 case possible for this condition

1) We can write,

3 in eight cards and 1 in one cards

3×8 + 1×1 = 24 + 1

= 25

2) Or we can write,

5 in three cards, 3 in two cards and 1 in 4 cards

5×3 + 3×2 + 1×4 = 15 + 6 + 4

= 25