Question

List all prime numbers. between 10 and 20

2 Identity these prime numbers from the clues
(a) it is less than 30
The sum of its digits is 8
(b) It is between 30 and 60
The sum of its digits is 10

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Answer 1

11, 13, 17, 19

Explanation:

A) Find the prime #'s less than 30.

2, 3, 5, 7, 11, 13, 17, 19, 23, 29

2) See which #'s add and is less than 30 but, equal to 8.

17.

B) Find prime #'s between 30 & 60

31, 37, 41, 43, 47, 53, 59

2) See which #'s add and is add to 10.

37.

Answer 2

B it is between 30 and 60