The number of integers that are multiples of both 20 and 7 is infinite. Here are the first few: 140, 280, 420, 560, 700, 840 . . .
The LCM of 7 and 20 is 140
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140
the first three common multiples of 7, 20, and 35 are 140, 280, and 420
There are no integer multiples of 7 between 135 and 139: 19 x 7 = 133, while 20 x 7 = 140.
They are 21 and 28
140, 280, 420 and so on.
140, 280, 420 and so on.
The first four multiples of five: 5, 10, 15, 20
21 and 28 are the two multiples.
21, 35, 49, 63, 77.
140,280,420