Question

Number Series Reasoning




Please answer.​

Answer 1

Answer:

the answer is -130

Step-by-step explanation:

in this series, we should understand the items given, so basically we should be very carefully regarding those number or item putting in a series in the question like 6 then came -10 which we totally understood that in order to get 10 we just see the precessive number i. e. 6 so we minus 1 from 6 it become 5 and we double it (5+5=10) so we get 10

similarly, we can do the same for the number in ?

we just saw the precessive number is 66 so we minus 66 by 1 we get 65,then we double 65 it become 130

but for the sign whether plus or minus we just check from the question, how these items are present in an alternate

i hope it will help thank you

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Answer 2

Answer:

Next number of the series : -130 (Option E)

Method of solving :

×-1+2¹, ×-1-2², ×-1+2³, ×-1-2⁴, ×-1+2⁵, ×-1-2⁶

Step-by-step explanation:

-4, 6, -10, 18, -34, 66, ?

First no in this series : -4

[(-4) × (-1)] = 4 + 2¹ = 4 + 2 = 6

[6 × (-1)] = -6 - 2² = -6 - 4 = -10

[(-10) × (-1)] = 10 + 2³ = 10 + 8 = 18

[18 × (-1)] = -18 - 2⁴ = -18 -16 = -34

[(-34) × (-1) = 34 + 2⁵ = 34 + 32 = 66

[66 × (-1)] = -66 - 2⁶ = -66 - 64 = -130