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What should come in place of the question mark ? in the following number series ?27, 125, ??, 729, 1331, 2197, 3375
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By: anil on 05 May 2019 01.19 am
Each number in the given series is the cube of an odd number. For example, $$27 = 3^3$$
$$125 = 5^3$$ $$729 = 9^3$$
$$1331 = 11^3$$
$$2197 = 13^3$$
$$3375 = 15^3$$ So, the number missing is $$7^3 = 343$$
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$$125 = 5^3$$ $$729 = 9^3$$
$$1331 = 11^3$$
$$2197 = 13^3$$
$$3375 = 15^3$$ So, the number missing is $$7^3 = 343$$