The composite numbers between 70 and 80 are 72, 74, 75, 76, 77 and 78.

All even numbers between 50 and 80 are composite.

They are the numbers that have more than two factors in them.

81, 82, 84, 85, 86, 87, 88. 80 and 90 are composite too

All of them except for 83 and 89 which are prime numbers

All of them except for 83, 89 and 97 which are prime numbers

All numbers between 80 and 100 except 83, 89, and 97 are composites.

All of them except 83, 89 and 97 which are prime numbers

80, 81, 82, 84, 85, 86, 87, 88, 90

The composite numbers between 50 and 80 are: 50, 51, 52, 54, 55, 56, 57, 58, 60 62, 63, 64, 65, 66, 68, 69, 70, 72 74, 75, 76, 77, 78, 80

All of them except for 83, 89 and 97 which are prime numbers.

All of them except for 83, 89 and 97 which are prime numbers

The composite numbers are: 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86 ,87, 88

65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80

Since they can both be evenly divided by factors other than themselves and 1, they are both composite numbers.

ANSWER: 70 and 80 are not prime numbers. They are composite numbers:70 is a composite number because the factors of 70 other 1 and itself (70) are 2, 5, 7, 10, 14, and 35.80 is also a composite number because the factors of 80 other 1 and itself (80) are 2, 4, 5, 8, 10,16, 20, and 40.

Any number except 61 67 71 73 and 79 which are prime numbers

Prime numbers between 71 to 80 = 73 and 79 Therefore there are 2 prime numbers between 71 to 80.

No. All even numbers are composite except the number 2.

prime numbers between 50 and 80 = 53,59,61,67 ,71,73,79

The numbers 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99 and 100 are composite (including the boundaries).

80, 81, 82, 84, 85, 86, 87, 88, 90

All even numbers greater than 2 are composite.

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