There are two prime numbers between 20 and 30. What are they?
Review Prime numbers Squares and square roots

Quiz
•
Mathematics
•
7th Grade
•
Hard
ปริศนา อินทรชิต
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20 questions
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1.
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30 sec • 1 pt
2.
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30 sec • 1 pt
The prime numbers between 30 and 40. How many are there?
3.
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30 sec • 1 pt
How many prime numbers are there between 90 and 100?
4.
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30 sec • 1 pt
Find the prime factors of 10.
5.
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30 sec • 1 pt
Find the prime factors of 15.
6.
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30 sec • 1 pt
Find the prime factors of 28.
7.
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30 sec • 1 pt
Find two different prime numbers that add up to 18.
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