Question

முழுவர்க்க எண்களை வட்டமிடுக 15,36,48,64,80

Answer 1

Given : 15,36,48,64,80

To Find : Square numbers

Solution:

15 = 3 * 5    

not a square number

36 = 2 * 2 * 3 * 3

= 2² * 3²

= (2 * 3)²

= 6²

Hence 36 is  square number

48 = 2 * 2 * 2 * 2 * 3

not a square number as 3 does not have pair factor

64 = 8²

a square number

80 = 2 * 2 * 2 * 2 * 5

not a square number as 5 does not have pair factor

Hence 64 and 36 are perfect square

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