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Which one number is wrong in the series?...

Which one number is wrong in the series?
`{:(A,B,C,D,E),(225,256,212,289,324):}`

A

(a) 225

B

(b) 256

C

(c) 212

D

(d) 324

Text Solution

Verified by Experts

The correct Answer is:
C
All the numbers are perfect squares. But the number 121 is less that its previous term.
`225 = 15 xx 5`
`256 = 16 xx 16`
` 121 = 11 xx 11`
`289 = 17 xx 17`
`324 = 18 xx 18`
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