Which of the following pair of numbers have 6 as the unit digits of their squares?

12

24

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14

18

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24

26

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16

22

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Solution

The correct option is C $24$ , $26$
If a number has either 4 or 6 in its unit digit, the square of that number will always have 6 in its unit digit.

In the given options, only 24, 26 has 4 and/or 6 in units place.

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6

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