Even numbers.
A geometric progression where each number is three times the previous number.
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18 and 36 do. So do 18 and 54, 36 and 54, 18 and 72, 54 and 72, and an infinite number of other pairs of numbers.
The two numbers are 18 and 36. Let the two numbers be x and y, then: x ÷ y = 2 ⇒ x = 2y x + y = 54 ⇒ 2y + y = 54 ⇒ 3y = 54 ⇒ y = 18 ⇒ x = 2y = 2 x 18 = 36
No. 54 is only evenly divisible by these numbers: 1, 2, 3, 6, 9, 18, 27, 54.
You can divide 54 by these numbers: 1, 2, 3, 6, 9, 18, 27, 54.
The numbers that go into both 18 and 54 evenly are 1, 2, 3, 6, 9, 18.