2, 2, 5, 13, 28, ?

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Solution

The correct option is D 52
The pattern is + 0, + 3, + 8, + 15, ..... i.e. + ( $1^{2} - 1), + (2^{2} - 1), + (3^{2} - 1), + (4^{2} - 1), . . . . .$
So, missing term = $28 + (5^{2} - 1) = 28 + 24 = 52$ .

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