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Q: How many 2 digit prime numbers are there whose unit digit is greater its tens digit?
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Related questions

What is largest two digit prime numbers whose digits are also prime?

73 satisfies your condition.

What is the smallest two digit prime number whose digits themselves are prime?

The smallest two-digit prime number whose digits themselves are prime is 23. Both 2 and 3 are prime numbers, and together they form the prime number 23.

Name the prime number between 20 and 30 whose ones digit is 7 greater than its tens digit?


What two prime numbers multiplied equals a 500 digit number?

The answer is vague but correct . Take any two prime numbers whose combined digit length is 501 and their product will generate a 500 or a 501 digit number.

What are all the two digit prime numbers neither of whose digits are prime?

11, 19, 41, 61, and 89

What 2-digit prime number has a sum of 10 when you add up its digits?

Two-digit prime numbers whose digits add up to 10 are:193773

What is a three digit number whose sum of the numbers is greater than twenty four?


What one-digit number is the product of two consecutive prime numbers?

There are only two prime numbers that are consecutive numbers, 2 and 3. Their product is 2 x 3 = 6. The first prime numbers are 2, 3, 5, and 7 and the only two consecutive prime numbers whose product is a single digit are 2 and 3. (The next two consecutive prime numbers, 3 and 5, have a two-digit product.)

What is the largest 3 digit prime number whose square root is a prime number?

There is no three digit prime number whose square root is a prime number. Prime numbers have no factors other than 1 and themselves. Any number having a prime number as a square root is a composite number.

What is the three digit numbers whose tens digit is an odd number that is greater than 10 and less than 20?

Meaningless question.

What is the largest and smallest of two-digit prime numbers whose digits are also prime digits themseleves?

Smallest is 11 & Largest is 77.

How many 2-digit numbers are there whose ones digit is 5 greater than its ten digits?