Question

find wrong number in series
400 450 350 375 325 330.5 312.5​

Answer 1

The wrong number number is "330.5".

Step-by-step explanation:

The given series are:

400 450 350 375 325 330.5 312.5​

The pattern follow,

+ 50, - 100, + 25, -50, +12.5, -25,.....

450 = 400 + 50 =450,

350 = 450 - 100 = 350,

375 = 350 + 25 = 375,

325 = 375 - 50 = 325,

330.5 = 325 + 12.5 = 337.5

The wrong number number is 330.5.

Hence, the wrong number number is "330.5".