How many two-digit numbers are there such that the sum of the number and the number formed by reversing the digits is a perfect square?

  • Option 1)

    9

  • Option 2)

    7

  • Option 3)

    2

  • Option 4)

    8

  • Option 5)

    4

Answers (1)

per\! f\! ect \: squares=

1,4, 9,16,25,36,49,64, 81,100,121,144, 169,196 (74,47),(56,65),(83,38),(92,29)

                                    =8    

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