Question
Select the number from the given options that can
replace the question mark (?) in the given series. 54, 75, 117, 180, 264, [?],495Solution
54 + 21 = 75 75 + 42 = 117 117 + 63 = 180 180 + 84 = 264 264 + 105 = 369 369 + 126 = 495
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