Question
Find the missing number in the givens series. 63,
99, ?, 195, 255Solution
8² – 1 = 64 – 1 = 63 10² – 1 = 100 – 1 = 99 12² – 1 = 144 – 1 = 143 14² – 1 = 196 – 1 = 195 16² – 1 = 256 – 1 = 255
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