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Earn +20 ptsQ: How many prime numbers have 5 as their last digit?
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How many two digit prime numbers are there?
There are 21 two-digit prime numbers.
How many three digit numbers have odd prime number as 1st digit A prime number as 2nd digit and an odd number as 3rd digit?
There are 17 such numbers.
How many prime numbers have 5 as there last digit?
one 5 all others are divisible by 5 at least
How many 4 digit numbers are all made of prime numbers?
24 of them.
How many three digit numbers are there that has the first digit is bigger than the last?
45
Related questions
How many two digit prime numbers are there?
There are 21 two-digit prime numbers.
How many three digit numbers have odd prime number as 1st digit A prime number as 2nd digit and an odd number as 3rd digit?
There are 17 such numbers.
How many two digit prime numbers have a units digit of 7 and what are the prime numbers?
17, 37, 47, 67, 97
How many prime numbers have 5 as there last digit?
one 5 all others are divisible by 5 at least
How many 5 digit prime numbers are there?
An on-line prime number chart ended at 10007. There are many more charts available for download. So the answer is that there are many five digit prime numbers.
How many 2 digit prime numbers are there?
there are 50 prime numbers between 1-100 and of them 2,3,5,7 are single digit so that would leave 46 double digit prime numbers between 1-100
How many 4 digit numbers are all made of prime numbers?
24 of them.
How many 2 digit prime numbers are there whose unit digit is greater its tens digit?
Ten.
How many three digit numbers exist in which the last digit is the same as the last digit of that number squared?
300
How many single-digit prime numbers are there?
4: 2, 3, 5 and 7. 1 is not a prime.
How many positive four digit numbers have 7 as their second digit and 8 as their last digit?
90
How many 2 digit numbers which are a perfect a square have their last digit as 8?
none
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