Is 21 a prime number or a composite number?
That's Correct!
It's Wrong!
The given number is 21.21 has more factors than just 1 and itself.For example, 3 is a factor of 21.21 ÷ 3 = 7So, 21 is a composite number.
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Key Data
Questions
49
Grade
4
Theme
Whole Numbers
Passing score
80%
Progress
8
Incorrect
10
Correct
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