how many two-digit primes have a ones digit of 1????????????????????
got no clue
Actually my first answer was incorrect! 91 is not a prime number, sorry.
So the answer to the question would be 11, 31, 41, 61, 71 which is 5
All the 2 digit primes are 11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,91,97
So the ones with a ones digit of one would be
11, 31, 41, 61, 71, 91
that is 6 numbers.
I'm so late
To answer this question, we instead count the number of primes among the 9 two-digit positive integers whose ones digit is 1. These primes are 11, 31, 41, 61, and 71. Therefore, 5 two-digit primes have a ones digit of 1.
i feel stupid thank you =]
My intention was in no way to make you feel that way.
It just seemed like an obvious way to answer the question.
My intention was in no way to make you feel that way too.
i felt stupid to not get the question and it was easy
and i thanked u for helping
mmmh, let's see, the 2 digits primes would be
11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,91,97
and the ones with a 1 in the units digit....?