Question

Subtract the sum of allbprime numbers betweeb 10 and20 frm the sum off all composite numbers between 10 and 20?

Answer 1

Answer:

The difference of sum of composite numbers and sum of prime numbers between 10 and 20 is 55.

Step-by-step explanation:

Including the numbers 10 and 20, the composite numbers between 10 and 20 are, 10,12,14,15,16,18 and 20.

The prime numbers between 10 and 20 are 11,13,17 and 19.

The sum of the composite numbers between 10 and 20,

$10+12+14+15+16+18+20= 105$

sum of prime numbers is

$11+13+17+19= 50$

The difference is

$105-50=55$.

Answer 2

Answer:

55

Step-by-step explanation:

10+12+14+15+16+18+20=105

11+13+17+19=50

105-50=55