104
3 and 84
20 and 30 All numbers have at least one common factor.
(143,3)(39,11)(33,13)
There is an infinite number of common multiples for 84 and 105. A common multiple of any two or more numbers is any number into which each of two or more numbers can be divided evenly (zero remainder).
none
-92
you could multiply 84 by 10 = 840 then multiply 84 by 2 = 168 add these two numbers = 1008
64
104
104
-936
101
There are lots of solutions for that. Here is one:1 x 84
9.165151389911680013176094387456 Solution: n * n = 84 n ^2 = 84 n = sqrt (84) n = 9.165151389911680013176094387456 check: 9.165151389911680013176094387456^2 = 84 = true! If you don't mean the square root of 84, then there are a number of numbers you can multiply to get 84, such as these: 42 * 2 28 * 3 21 * 4 14 * 6 7 * 12
252
1, 2 and 84