Question

4. The smallest natural number, which when added to the difference of
squares
of 17 and 13 gives a perfect square, is
(a) 5
(b) 4
(c) 21
(d) 1
plz don't spam.
And correct answer is d) is correct but u have to solve it step by step.
And option d) is 1 not 11. So don't give me wrong answers ​

Answer 1

Answer:

The difference of squares of 17 and 13 is given by 172−132

=289−169=120

The nearest square number to 120 is 121 i.e 112.

Hence, we need to add 1 to the given expression.

Answer 2

Answer:

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