(2 x 21) + (2 x 26) = 2 x 47 = 94
2 x 2 = 42 x 5 = 10The GCF is 2.
84/42 = 2 210/21 = 10
2 x 2 x 7 = 28 2 x 3 x 7 = 42 The GCF is 2.
The least common multiple (LCM) of 2 and 42 is 42.
Three ways to factor 42 are factor trees, fireworks and rainbows.
infinitive
2 parallelograms
using a dot using parenthesis ex: (2)(3)
Using the stairs, or taking the elevater
There are five digits all together. The number of ways of arranging them is5 x 4 x 3 x 2 x 1 = 120 .But the three 2s can be arranged in 3 x 2 = 6 different ways and they all look the same.And the two 4s can be arranged in 2 different ways and they look the same.So out of the 120 different ways of arranging all five, there's a group of sixfor every possible arrangement of the 2s that all look the same, and there'sa group of two for each possible arrangement of the 4s that both look thesame.The number of combinations that look different is 120/(6 x 2) = 10 .And here they are:2 2 2 4 42 2 4 2 42 2 4 4 22 4 2 2 42 4 2 4 22 4 4 2 24 2 2 2 44 2 2 4 24 2 4 2 24 4 2 2 2
3
22 + 22 - 2 = 42
the LCM of 42 and 126 using a prime factorization is 2 times 2 times 3
-1 * 42 = -42 1 * -42 = -42 -2 * 22 = -42 2 * -22 = -42 -3 * 14 = -42 3 * -14 = -42 There are many ways to multiply two numbers to equal -42. However, one must be negative.
It is: 2*3*7 = 42
42=2^3*7