Look at this series: 664, 332, 340, 170, ____, 89, ... What number should fill the blank?

 178 THE ANSER IS 

THE EXPLANETION

89 * 2 = 178

178 - 8 = 170

170 * 2 = 340

340 - 8 = 332

332 * 2 = 664

89 * 2 = 178

178 - 8 = 170

170 * 2 = 340

340 - 8 = 332

332 * 2 = 664

Hence the answer is 178

178

A hundred and seventy-eight

The answer to the above question is 178. Bilal

:

N, N' = N/2, N'' = N' +8, N''' = N''/2, N'''' = N''' +8, N''''' = N''''/2

If N has an odd number of dashes (') we divide the last number by two, if it has an even number of dashes (') we add8 to the last number

double of 89 i.e 178 is the answer. Thanks.

the number is hundred and seventy-eight 178

The answer is 178,

664/2 = 332

332+8 = 340

340/2 = 170

170+8 = 178

178/2 = 89