Question

The sum of seven consecutive natural numbers is 1617. How. many of these numbers are not prime
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Answer 1

Answer:

i guess its 2

Step-by-step explanation:

Answer 2

Answer:

let x, x+1, x+2 x+3 x+4 x+5 x+6 be the seven consecutive natural number.

sum of seven consecutive natural number be x+x+1+x+2+x+3+x+4+x+5+x+6=1617

7x+28=1617

7x=1617-28

7x=1589

x=1589/7

x=228

so,the no.be 228,229,230,231,232,233,234

no.of composite no.=5

no. of prime no.=2

therefore, no.of not prime no.

i.e composite no.=5