P is the set of factors of 20

The elements of set P={1,2,4,5,10,20}

Hope it will help you...

P = {1 , 2 , 5 , 10 , 20}.

Step-by-step explanation:

20÷2

=10

10÷2

=5

5÷5

=1

then the prime factors of 20 are 2 and 5

1

and

2

and

5

and

5×2

=10

and

5×2^2

=20

P = {1 , 2 , 5 , 10 , 20}.

:)

1.8 or

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐