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Earn +20 ptsQ: Which number is prime 9 18 21 25?
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Is 25 and 21 prime numbers?
None of them is a prime number.
What one is a prime number 21 23 25?
23 is a prime number.
Which one is prime 21 25 23?
Only 23 is a prime number.
What is the median of these numbers 25 18 32 21 29?
Arranging the numbers in numerical order gives 18 21 25 29 32. Taking the median number (that is, the centre number) of these two gives 25.
Is 3 13 17 21 23 25 a prime number?
3, 13, 17, 23 are prime numbers. The others are not.
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