Question

9. Semi Prime Numbers
A natural number that can be expressed as a product of two prime numbers is called
semi-prime number.
For example,77 is a semi-prime since it is a product of two prime numbers,7 and 11.
(Remember that 1 is not prime.)
II. Two consecutive numbers from 10 to 25 which are semi-prime
a) 20 and 21
b) 14 and 15
c) 15 and 16
d) 22 and 23
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Answer 1

Answer:

Mark Brainliest!!!!!

Step-by-step explanation:

The answer will be 'd' because 22 is made with prime number 2 & 23 is made with 2 & 3 which are also prime numbers.