Question

15. Write seven consecutive composite numbers less than 100 so that there is no prime
between them.
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Answer 1

Answer:

91,90,99,98,97,96,95,94,93,92,91

Answer 2

4, 6,8,9,10,12,14 are seven consecutive composite numbers less than 100.

a composite number is a product of prime numbers. a shortcut to find composite numbers is that all numbers other than one(1) and prime numbers(2,3,5,7,9....) are composite numbers.

composite numbers :

4 = 2 x 2 ( here 2 is a prime number)

6 = 2 x 3 ( here 2,3  are prime numbers)

8 = 2 x 2 x 2 (here 2 is a prime number)

9 = 3 x 3 (here 3 is a prime number)

10 = 2 x 5 (here 2 and 5 are prime numbers)

12 = 2 x 2 x 3 (here 2 and 3 are prime numbers)

14 = 2 x 7 ( here 2 and 7 are prime numbers)

HOPE THIS MAKES YOU UNDERSTAND THE CONCEPT OF COMPOSITE NUMBERS AND  HELPS YOU WITH YOUR HOMEWORK

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