Find the odd man out from the following series: 2, 3, 5, 7, 11, 13, 17, 19, 21, 23,

M4maths Previous Puzzles

11 Jun 2019 Odd man out Find the odd man out from the following series: 2, 3, 5, 7, 11, 13, 17, 19, 21, 23,: OPtion
1) 2
2) 3
3) 5
4) 7
5) 11
6) 13
7) 17
8) 19
9) 21
10) 23; Correct Option: 9 Best Solution (7)

G.S.Kantharao 5 years AGO

Except 21 all other are primes.
My option is 9👈

Like? Yes (1) | No

Varun 5 years AGO

21 is not a prime number
It is a composite number, 21 = 7*3 , 21*1
=> Option (9) is odd man out

Like? Yes (1) | No

sruthi pujari 5 years AGO

prime number series, except 21

Like? Yes | No

Devendra Marghade 5 years AGO

All are prime numbers except 21.
Option 9)

Like? Yes | No

Pragati Rode 5 years AGO

All are prime numbers except 21
so option is 9

Like? Yes | No

kiran 5 years AGO

21 is not a PRIME no...And this series is prime

Like? Yes | No

alok pal 5 years AGO

repeated 2 in 3 times not allowed in series

Like? Yes | No

Dimple

India

Punjab

Time: 00:01:33

Points

Maths Quotes

MATHEMATICS is a great motivator for all humans.. Because its career starts with "ZERO" but it never end(INFINITY)..

Kumar Purnendu

Students attend our lectures, not because the mathematics we teach ‘makes lots of fun’ for us, but because they believe they can learn some essential knowledge from us. And each of our young students has only one life to live. We should therefore be a

H. Behnke

Placed User Comments

M4Math helped me a lot.

Vipul Chavan 4 years ago

Thanks m4 maths for helping to get placed in several companies.
I must recommend this website for placement preparations.

yash mittal 5 years ago

Find the odd man out from the following series: 2, 3, 5, 7, 11, 13, 17, 19, 21, 23,

M4maths Previous Puzzles

11 Jun 2019 Odd man out

Find the odd man out from the following series:
2, 3, 5, 7, 11, 13, 17, 19, 21, 23,

OPtion

Sponsored Links

Challenger of the Day

Maths Quotes

Placed User Comments

Site Links

Useful Info

Placement papers