20,40,60
Proof
(20)(20/4=5)(20/5=4)(20/10=2)
And
(40)(40/4=10)(40/5=8)(40/10=4)
And
(60)(60/4=15)(60/5=12)(60/10=6)
the first three multiples of 3 and 11 is 33,66,and 99.
The common multiples of an set of numbers are the multiples of their lowest common multiple. lcm(7, 8, 9) = 504 → the first 3 common multiples of 7, 8, 9 are 504, 1008, 1512.
They are the first three multiples of their lowest common multiple: 36, 72, 108.
lcm(2, 7) = 14 → first 3 common multiples are: 14, 28, 42; lcm(2, 8) = 8 → first 3 common multiples are: 8, 16, 24; lcm(7, 8) = 56 → first 3 common multiples are: 56, 112, 168; lcm(2, 7, 8) = 56 → first 3 common multiples are: 56, 112, 168.
The first common multiples of 5, 3, and 8 are found by listing out the multiples of each number and finding the least common multiple. The multiples of 5 are 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, and so on. The multiples of 3 are 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, and so on. The multiples of 8 are 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, and so on. The first common multiples of 5, 3, and 8 are 24 and 48.
30, 60, 90
The anser to that Q is 30.
40, 80, 120
20, 40, 60
20, 40 and 60
30, 60, 90
20, 40 and 60
30, 60, 90
30, 60, 90
30, 60, 90
The sum of the first 10 multiples of 3 is 165.
20, 40, and 60