1 Answers

Option 2 : 21

In the first column 102 = 100, 62 = 36, 10 + 6 = 16

In the second column 72 = 49, 52 = 25, 7 + 5 = 12

Similarly,

⇒ 112 = 121, 102 = 100, 11 + 10 = 21.

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