Perfect square, squared

Number Theory Level 1

Find the two digit number which is a perfect square and whose digits are themselves perfect squares (base 10).


The answer is 49.

Rishabh Jain by Rishabh Jain , 23, India

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3 solutions

Hello,

2 digit number whose are perfect squares = 16, 25, 36, 49 , 64 , 81

as you can see the only perfect square that is the each digit is a perfect square itself is 49(4 and 9).....

thanks....

3 Helpful 0 Interesting 0 Brilliant 0 Confused
Harshad Kale
Apr 19, 2014

49 9 is a square and 4 is a square too

1 Helpful 0 Interesting 0 Brilliant 0 Confused
Rishabh Jain
Apr 4, 2014

49 49 is a perfect square .Its digits 4 and 9 are also perfect square

1 Helpful 0 Interesting 0 Brilliant 0 Confused

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