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There is only one two-digit Prime number that has a units digit of 7, and that is 17. This is because all prime numbers greater than 2 are odd, and the only odd prime number ending in 7 within the two-digit range is 17.
Oh, what a happy little question! Let's think about it together. The only two-digit prime number with a unit digit of 7 is 17. It's like a little gem shining brightly in the vast mathematical landscape. Just remember, every number is special in its own way.
Oh, dude, you're testing my math skills now. Okay, let's see. So, the only two-digit prime number with a units digit of 7 is 17. So, the answer is just one. Easy peasy lemon squeezy.
Two digit number with 7 as unit digit 7 are:
17, 27, 37, 47,57,67,77,87,97
we know that in 27 sum of digits =2+7=9
for 57=> 5+7=12
87=> 8+7=15
so 27,57 and 87 are divisible by 3
77=7*11 so 77 is divisible by 7 and 11
Thus 4 no are not prime
So the prime number are:
17,37,47,67 and 97
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How many two digit prime numbers have a units digit of 7 and what are the prime numbers?
17, 37, 47, 67, 97
What is the units digit of the product of the first 100 prime numbers?
0 Look at the product of the first 3 prime numbers: 2 x 3 x 5 = 30. Any number multiplied by 30 will have a 0 in the units digit. So, no matter how many prime numbers you are multiplying, if once you have a number ending in 0, all of the rest will end in 0.
How many 2 digit prime numbers are there whose unit digit is greater its tens digit?
Ten.
How many 2 digit prime numbers are there?
There are 21 two-digit prime numbers. The first two-digit prime number is 11, and the last two-digit prime number is 97. Prime numbers are numbers greater than 1 that are only divisible by 1 and themselves.
How many positive prime numbers have a ones digit of 5?
Only one positive prime number has a 5 in the ones digit. That prime number is 5. All other numbers with a 5 in the ones digit are composite because they will be divisible by 5.
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 two digit prime numbers are there between 1-100 such that they have digit 7 in their units place?
There are 5 of them.
How many two digit prime numbers are there?
There are 21 two-digit prime numbers.
How many of the integers from 1 to 121 that have a units digit of 1 are prime?
The prime numbers with a units digit of 1 in the range 1 - 121 are :- 11, 31, 41, 61, 71 and 101.......making 6 primes in total.
What is the units digit of the product of the first 100 prime numbers?
0 Look at the product of the first 3 prime numbers: 2 x 3 x 5 = 30. Any number multiplied by 30 will have a 0 in the units digit. So, no matter how many prime numbers you are multiplying, if once you have a number ending in 0, all of the rest will end in 0.
How many prime numbers up to 100 have the number 9 as their units digit?
19 29 59 79 89 Five of them.
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 primes are there whose units digit is less than its ten digits?
There is no simple formula for that; I suggest you look up the prime numbers in a table of prime numbers, analyzing each prime number in the range 10-99 whether it fulfills this specific criterion.
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 21 two-digit prime numbers. The first two-digit prime number is 11, and the last two-digit prime number is 97. Prime numbers are numbers greater than 1 that are only divisible by 1 and themselves.
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.
