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Q: How many two digit primes have a ones digit of 1?
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How many two-digit primes have the sum of the digits equal to 8?

Three of them.


How many two digit numbers are there in which the tens digit is greater than the ones digit?

There are 45 of them.


How many two digit numbers are there in which the tens digit is greater then the ones digit?

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The three-digit prime number that meets the given criteria is 373. This number is prime itself, with all its digits (3) being prime. Additionally, when considering the first two digits (37) and the last two digits (73) separately, both combinations also form prime numbers.


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Well, isn't that just a happy little question! When you add tens to a number, the tens digit increases by one while the ones digit stays the same. It's like adding a little touch of sunshine to your number, making it just a bit bigger and brighter. Just remember to keep those digits happy and balanced as you add those tens!


What is a two digit number that has a tens digit that is 8 more than the ones digit?

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