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How many of the integers from 1 to 121 that have a units digit of 1 are prime?
Wiki User
∙ 12y ago
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.
Wiki User
∙ 12y ago
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How many integers between 2000 and 3999 have a ones digit that is a prime number?
There are 800 such numbers.
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 one digit integers are there?
There are 10 one digit positive integers (0 - 9) and 9 one digit negative integers (-9 to -1) making 19 in all.
How many 1-digit integers are there such that product of their two digit is 24?
-23
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 two digit prime numbers have a units digit of 7 and what are the prime numbers?
17, 37, 47, 67, 97
How many integers between 2000 and 3999 have a ones digit that is a prime number?
There are 800 such numbers.
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 one digit integers are there?
There are 10 one digit positive integers (0 - 9) and 9 one digit negative integers (-9 to -1) making 19 in all.
How many 1-digit integers are there such that product of their two digit is 24?
-23
How many two-digit positive integers are there?
90
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 positive two-digit integers is the ones digit greater than twice the tens digit?
4
How many two digit prime numbers are there?
There are 21 two-digit prime numbers.
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 positive three-digit integers are divisible by neither 2 or 3?
the range of three-digit integers is from 100 to 999. Therefore, there are 300 positive three-digit integers that are divisible by neither 2 nor 3.1 day ago
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.
