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2/10 Numbers

Find the odd one out: 19, 23, 31, 43, 55.

Factors and division are key in solving the question.

The main category is prime numbers.

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1000
How many months are there in a year?

Comments (2)

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New
ninnsays...

49 is the only composite number, you mean..

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Regular
Annitasays...

49 is the only prime number

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