Question

I am an odd square number multiple of 7 less than 50 .

Answer 1

Answer:

It is smaller than 80, it is a multiple of 7 (21/7=3), it is an odd number (21 is not divisible by 2),and the difference between its two digits (2 and 1) is 1. Hence, The required number is 21. First, let's find out all the multiples of 7 less than 80.

Answer 2

Answer:

7

21

35

49

are the multiple of 7 less then 50