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All the multiples of 11 up to 100 except 11 itself which is a Prime number
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How many composite numbers less than 100?
74
How many composite numbers less than 1500 are there?
1260 of them.
How many composite number less than 50?
There are 15 prime numbers and 34 composite numbers because 1 is not considered to be a prime or composite number
How many composite numbers are greater then 20 but less then 25?
3 composite numbers, 21, 22, and 24, are greater than 20 but less than 25.
How many composite numbers are greater than 50 but less than 70?
There are 15 composite numbers greater than 50 but less than 70
How many composite numbers are less than 30?
There are 18 that are less than 30.
How many pairs of composite numbers are in 36?
Only two: (4, 9) and (6, 6). In all other factor pairs, one of the numbers is not composite.
How many composite numbers that are less than 20?
The composite numbers that are between 1 and 20 inclusive are: 4 6 8 9 10 12 14 15 16 18 20 This is a total of eleven composite numbers equal to 20 and below.
How many composite numbers are greater then 20 and less than 25?
Three of them.
How many even composite numbers are less than or equal to 100?
49 of them.
How many composite numbers less than 1500?
Of the 1499 numbers less than 1500, number 1 is neither prime nor composite, 239 are primes, and the remaining 1259 are composites.
How many composite numbers are greater than forty but less than fifty?
Five.
