Factors
20
All but 4.
From the given dimensions no kind of triangle is possible.
Because they are multiples of 5. All multiples of 5 have 5 as a factor, which means they are divisible by 5.
There are an infinite number of multiples of 5
10, 20 and 30
30
Their least common multiple is 40
90, 180, 270
The least common multiple of the numbers 8 and 10 is 40.
30
it is 7070
They are 1 and 5
The GCF is 5.
Factor them. 2 x 3 = 6 2 x 5 = 10 Combine the factors, eliminating duplicates. 2 x 3 x 5 = 30, the LCM.
The LCM of 5 and 10 is 10.
70