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How many prime numbers between 1 and 200 have a units digit of 3?
Wiki User
∙ 9y ago
3 13 23 43 53 73 83 103 113 163 173 193
Wiki User
∙ 9y ago
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Do all 2 digit prime numbers have a units number of 1 3 7 or 9?
Yes
What is the digit in the units place of a number is 5 if the no lies between 150 and 200 will be composite or prime?
For any integer greater than 5, where the units digit is 5 then that number can be expressed as the product of n and 5. As such, the number is composite. Therefore all numbers in the range 150 to 200 that have a units digit of 5 are composite,.
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 numbers with 2 or 7 as the units digit are there between 10 and 1000?
In every 100 there are 10 numbers that have a units digit of 2 and 10 with 7, making 2 with 2 or 7. Between 0 and 1000 there are 10 hundreds, making 10 × 20 = 200 such numbers. BUT 2 and 7 are less than 10, so there are two less such numbers, making 200 - 2 = 198 such numbers.
The units digit of a two digit number exceeds twice the tens digit by 1 what numbers if the sum of its digit is 10?
The units digit of a two digit number exceeds twice the tens digit by 1. Find the number if the sum of its digits is 10.
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 have a units digit of 7 and what are the prime numbers?
17, 37, 47, 67, 97
Two prime numbers between 100 and 199 such that the tens digit is a prime number and the tens and ones digit taken together are a 2 digit prime number find the sum of these two prime numbers?
For the tens digit to be a prime number then it must equal 2, 3, 5 or 7. There are four 3-digit prime numbers that fit the above condition and also have the tens and units digits forming a 2-digit prime number. 131, 137, 173, 179. The person supplying the question may like to sum the various combinations.
what is less than 100 with a 1 in the units place are prime number?
2, 3, 5, and 7 are prime numbers for one digit numbers. 1 is NOT a prime number.
Do all 2 digit prime numbers have a units number of 1 3 7 or 9?
Yes
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 digit in the units place of a number is 5 if the no lies between 150 and 200 will be composite or prime?
For any integer greater than 5, where the units digit is 5 then that number can be expressed as the product of n and 5. As such, the number is composite. Therefore all numbers in the range 150 to 200 that have a units digit of 5 are composite,.
How many numbers between 100 and 1000 have two as the units digit?
90 of them.
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 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 prime numbers up to 100 have the number 9 as their units digit?
19 29 59 79 89 Five of them.
What is the units digit of the product of the 1000 smallest prime numbers?
Long way: find the smallest prime numbers and use a calculator. Short way: recognize that 2 and 5 are both prime. Multiply them to get 10. We know that every multiple of ten has a 0 in the units place, so the answer to your question is 0.
