Can someone tell me the Highest Common factor of these numbers...?

Question

1. 40 and 96
2. 36 and 54
3. 84 and 210

also can someone help me with this:

4. 600 can be written as the product of its prime factors as 2cubed, x 3 x 5squared
In a similar way express the following as the PRODUCTS of their Prime Factors

a) 60 _____
b) 88______
c) 132_____

Thankyou

Answer 1

1) . . . . common factor is 8
2) . . . . common factor is 18
3) . . . . common factor is 42
4) . . 60 = 2^2 + 5 x 3
. . . . 88 = 2^3 x11
. . . . 132 = 2^2 +11x3

Answer 2

The numbers have a 2 in common. The w's have 4 powers in common. The x's has one power in common. The u's have none in common. HCF = 2*(w^4)*x

Answer 3

4 a) 2^2 x 3 x 5

b) 2^3 x 11

c) 2^2 x 3 x 11