Question

11. Write five pairs of prime numbers less than 20 whose sum is divisible by 5 (Hint: 3+7= 10) Dine 12​

Answer 1

Step-by-step explanation:

Five pairs of Prime Numbers less than 20 whose sum is divisible by 5 are (2,3), (3,7), (2,13), (5,5), (3,17), (7,13) According to the Divisibility Rule of 5, any number ending with 0 or 5 is divisible by 5.

Answer 2

Answer:

1. 13+7=20
2. 3+7=10
3. 1+9=10
4. 3+2=5

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