Find the missing number in the given series: 126, 64, 34, 20, 14, ___
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May be 2 ....................................
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Consider N is missing number
126 64 34 20 14 N
(126-64*2) (64-34*2) (34-20*2) (20-14*2) (14-2N)
(126-128) (64-68) (34-40) (20-28) (14-2N)
(-2) (-4) (-6) (-8) (14-2N)
as we see this series carefully (-2) (-4) (-6) (-8) next term will be (-10)
means
(14-2N) = -10
14+10 = 2N
24 = 2N
12=N which is missing number
126 64 34 20 14 N
(126-64*2) (64-34*2) (34-20*2) (20-14*2) (14-2N)
(126-128) (64-68) (34-40) (20-28) (14-2N)
(-2) (-4) (-6) (-8) (14-2N)
as we see this series carefully (-2) (-4) (-6) (-8) next term will be (-10)
means
(14-2N) = -10
14+10 = 2N
24 = 2N
12=N which is missing number
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