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Earn +20 ptsQ: How many triangle numbers are there between 20 and 50?
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How many natural numbers between 32 and 53?
There are 20 natural numbers between 32 and 53.
How many odd numbers are there between 19 and 57?
There are 20 odd numbers between 19 and 57
How many odd numbers are there between 20 and 50?
half of (50 - 20)
How many prime numbers 20 and 30?
There are two prime numbers between 20 and 30 which are 23 and 29
How many primes are there in between 0 and 20?
There are 9 prime numbers between 0 and 20: 1,2,3,5,7,11,13,17,19.
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