Question

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

Answer 1

Explanation:

There are 5 such no.s

19,29,59,79,89

Answer 2

Answer:

there are five such numbers which are in between number 1 to 100 which have their unit digit as 9

these five numbers are - 19,29,59,79,89

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