Question

A={x:x is factor of 20}​

Answer 1

Answer:

20 is a composite number. 20 = 1 x 20, 2 x 10, or 4 x 5. Factors of 20: 1, 2, 4, 5, 10, 20. Prime factorization: 20 = 2 x 2 x 5, which can also be written 20 = 2² x 5.

Answer 2

A = {x : x is a factor of 20}

A = {1 , 2 , 4 , 5 , 10}

Because 1 , 2 , 4 , 5 and 10 are the factors of 20.