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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?
Wiki User
∙ 14y ago
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.
Wiki User
∙ 14y ago
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What is the ratio of the number of one-digit prime numbers and the number of one-digit composite numbers?
The ratio of the number of one-digit prime numbers to the number of one-digit composite numbers is one to one. The one-digit prime numbers are 2, 3, 5, and 7. The one-digit composite numbers are 4, 6, 8, and 9. Therefor, the ratio is 4:4, which simplifies to 1:1.
What is the difference between the greatest and smallest 2-digit prime numbers?
11 is the smallest 2-digit prime number and 97 is the greatest 2 digit prime number, so their difference is 86
What is the sum ratio of the number of one digit prime numbers and the number of one digit composite numbers?
There are four of each.
How many 3 digit whole numbers are there between 1 and 1000?
There are 900 three-digit whole numbers between 1 and 1000
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
Can two prime numbers be multiplied together to get a 400 digit number?
Yes.
What is the 3 digit odd number between 2700 2800?
Since both of those numbers contains four digits, there are no three-digit numbers between them.
How many four-digit numbers are there between 500 and 3000?
If you include the number 3,000, there are exactly 2,001 4-digit numbers between 500 and 3000.
What is the difference between the largest 4 digit numbers with repetition and the smallest 3 digit number with repetition?
The diference between the highest 4 digit number and the lowest 3 digit number is 9999 Highest 4 digit: 9999 Lowest 3 digit: 000
What digit does appear most frequently between numbers 1 and 1000?
By including the number 1000, the digit 1.
What is the difference between the largest 4 digit numbers with repetition and the smallest 3 digit number with repitition?
9888
How do you find numbers between numbers in math?
20 101 a three digit number and i don't know what is the answer
What is the difference between the greatest and the 2 digit least prime numbers?
Greatest 2 digit Prime number is 97. Lease 2 digit prime number is 11.
What is the difference between the greatest and the least 2-digit prime numbers?
Greatest 2 digit prime number is 97. Lease 2 digit prime number is 11.
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 3 digit numbers can be found using 3 of the digits 6789 only once in each number?
4 options for the first digit, 3 options for the second digit, 2 options for the third digit. Multiply the number of options together, and you find how many 3-digit numbers you can get.
What is a double digit number?
It is a number with two digits in it. So it goes into the "tens" place of the numbers. Basically any whole number from 10 to 99. See how any number between those numbers only has 2 numbers, or digits that make up the number? 9 would only be a single-digit number, and 100 would be a triple-digit number.
