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Q: How many numbers between 1 to 80 are divisible by 3?

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There are 80 such numbers.

Any multiples of 80 are divisible by 80. Three examples: 80 / 80 = 1 : 160 / 80 = 2 : 800 / 80 = 10

No; it is divisible only by its factors (1, 2, 4, 5, 8, 10, 16, 20, 40, and 80).

80

50

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The only one is 90.

There are 9 numbers evenly divisible by 10 : 10, 20, 30, 40, 50, 60, 70, 80, and 90

56, 64, 72, 80, 88, 96.

There are 80 such numbers.

There are 10 numbers between 10 and 80 that are divisible by 7 with no remainder: 14, 21, 28, 35, 42, 49, 56, 63, 70, and 77.

The answer is twenty but there are many more.

There are two prime numbers between 60 and 80: 61 and 67. Both numbers are divisible only by 1 and themselves and do not have any other factors.

Numbers that are divisible by 80 are itself and any of its other multiples

To be divisible by both 4 and 5, the number has to be divisible by 20. Therefore, there are 12 numbers between 1 and 240, inclusive, which are divisible by 4 and 5: 20, 40, 60, 80, 100, 120, 140, 160, 180, 200, 220, 240.

Any multiples of 80 are divisible by 80. Three examples: 80 / 80 = 1 : 160 / 80 = 2 : 800 / 80 = 10

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

Eight: 45, 50, 55, 60, 65, 70, 75 and 80.