Question

Find the odd one in the following series.
2, 3, 5, 7, 11, 13, 17, 21, 23​

Answer 1

Answer:

21 as other all numbers are prime numbers

Step-by-step explanation:

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Answer 2

Answer:

21' is the 'odd one out' in the series. The prime numbers are numbers which are divisible by itself and 1. In the given series, except 21, all the numbers are prime numbers.

Step-by-step explanation:

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