tell me the answer
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the answer is 99
see
1,3,5,7,9
7 is the 4th number of the series and 4×2 is 8, 8-1 is 7
similarly
5 × 2 is 10, 10 - 1 is 9
so, 50 × 2 is 100, 100 - 1 is 99
kuriakosereji:
isn't it correct?
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