Question

which the help of sieve of eratosthenes answer the following
(a) write down separately the prime and composite number less than 20
(b) which is the longest prime number between 1 and 10
(c) make a list of seven consecutive numbers none of which is prime
​

Answer 1

Answer:

(a) prime numbers less than 20 are

2, 3, 5, 7, 11, 13, 17 and 19

composite numbers less than 20 are

1, 4, 6, 8, 9, 10, 12, 14, 15, 16 and 18

(b) 90, 91 92 93 94 95 and 96

Step-by-step explanation:

Hope it helps you