80 and 100
The first four multiples of 20 are: 20 40 60 80
No number between 55 and 101 is a multiple of 410, though some are multiples of 20. 60, 80 and 100 are the multiples of 20 in that range, but none of them are multiples of 410. So no number between 55 and 101 is a multiple of 410 and 20.
20, 40, 60, 80.
20, 40, 60, 80, 100, 120
Not all multiples of 40 are multiples of 80. Only the even multiples of 40 are also multiples of 80. The odd multiples, e.g. 40, 120, 200, 280, and 360, are not multiples of 80.
21, 35, 49, 63, 77.
80 and 100
The multiples of 16 are 16, 32, 48, 64, 80, etc. The multiples of 20 are 20, 40, 60, 80, 100, etc. The common multiples of 16 and 20 are 80, 160, 240 and so on.
There are 40 odd numbers between 20 and 100. Remember that an odd number is every second number. There are 80 numbers between 20 and 100, so there are 40 odd numbers and 40 even numbers.
The first four multiples of 20 are: 20 40 60 80
No number between 55 and 101 is a multiple of 410, though some are multiples of 20. 60, 80 and 100 are the multiples of 20 in that range, but none of them are multiples of 410. So no number between 55 and 101 is a multiple of 410 and 20.
20, 40, 60, 80, 100, 120 * * * * * These are the first six multiples!
Multiples of 20 include 20, 40, 60, 80 and 100.
There are 10 multiples of 6 in that range.
63 and 72 are the only two multiples of 9 between 60 and 80.
20, 40, 60, 80, 100.