cool mat 4

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INTERESTING SERIES find the missing term 3, 8 , 35 , 48 , ? , 120


The answer is 99.

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1 solution

The first number is the product of the first two odd numbers, i.e. 1 & 3,

The second number is the product of the first two even numbers i.e. 2&4

Similarly

           35 = 5 x 7

           48 = 6 x 8

Now, the next digit is the product of the next 2 odd numbers, i.e. 9 and 11. So the answer is 99...

Cheers!!:):)

They're all 1 less than square numbers :3

Isaac Buckley - 6 years, 7 months ago

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