Question

How many prime numbers between 1and100 have their unit digit as 9

Answer 1

Step-by-step explanation:

19,29,59,79,89

so 5 no.s are such there

Answer 2

Answer:

There are 25 prime numbers from 1 to 100.from that 19,29,89,59,79 have 9 on its unit place.

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