Question

5. Give examples for each of the following:
a. Two prime numbers whose sum is also a
prime number.
b. Two prime numbers whose difference is also
a prime number
c. Two prime numbers having same digits like
13 and 31.
d. Two composite numbers less than 100
ending with 9.​

Answer 1

Answer:

a) 2,3

b) 5,3

c) 13,31

d) In each of the nine decades (10–19, 20–29, …, 90–99)

Step-by-step explanation:

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Answer 2

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