Question

Find the wrong number in the given series.

8, 27, 125, 343, 1381
A) 27
B) 8
C) 343
D) 1381

Answer 1

⭕️Here... If we notice the given series is in the form of Cubes of Prime Numbers.

 

2³, 3³, 5³ ..........

⭕️but  9³ is 1331

 
⭕️So clearly we notice that option (D)1381 is wrong.

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Answer 2

Answer:

Option D is wrong one !

➡Here is Cube of given prime number sequence :-

As,

✒ 8 => 2^3

✒27 => 3^3

✒125 => 5^3

✒343 => 7^3

✒1331 => 11^3

Hence ,

In this sequence all the numbers should be the cube of prime numbers.