Question

mental ability number series 5,11,25,55,117,243,____​

Answer 1

Given :- mental ability number series 5,11,25,55,117,243,____ ?

Answer :-

→ 5 * 2 + 1 = 10 + 1 = 11

→ 11 * 2 + 3 = 22 + 3 = 25

→ 25 * 2 + 5 = 50 + 5 = 55

→ 55 * 2 + 7 = 110 + 7 = 117

→ 117 * 2 + 9 = 234 + 9 = 243 .

as we can see that, we have to multiply previous number by 2 and add odd numbers. then next we have to multiply 243 by 2 and add next odd number that is 11 .

therefore,

→ 243 * 2 + 11 = 486 + 11 = 497 (Ans.)

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