Solve It........3

f(5)=35

f(6)=48

f(7) =63

f(9)= ?

P.S. This is a number analogy question.

55 100 96 65 99 32 45 15

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3 solutions

Caleb Townsend
Mar 1, 2015

Although it's possible to come up with many satisfactory relations, the simplest one I can find with its answer within those given is f ( n ) = n × ( n + 2 ) f(n) = n\times(n +2) So the answer is 9 × 11 = 99. 9 \times 11 = \boxed{99.}

each number,(n) is being multiplied with (n+2)

Gilang Ardya
Apr 13, 2015

You can also use sequences skills on it.

f(6) - f(5) = 48 - 35 = 13

f(7) - f(6) = 63 - 48 = 15

f(9) = f(7) + (17 + 19) = 63 + 36 = 99

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