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The sum of the digits of a two-digit number is 12 If the digits are interchanged the number is increased by 54 What is the original number?
39
Four digit number greater than 9000 hundreds digit is twice the tens digit ones digit is greater than the tens digit the sum of the digits is twenty?
9218 9425
What number am I I have 2 digits which have a sum of 7 both of my digits are less than 5 my tens digit is greater than my ones digit?
12
What is the units digit of the least whole number greater than 1000 whose digits are all different?
What is the units digit of the least whole number greater than 1000 whose digits are all different?
Why is 4.23 less than 4.13?
4.23 is greater than 4.13 Notice how the digit that is a 2 is greater than the digit that is a 1, and the other digits are identical.
What is the sum of all of the two-digit primes that are greater than 12 but less than 99 and are still prime when their two digits are interchanged?
472.
What two digit number are interchanged to form a new two-digit number?
Any two digit number in which: (a) the units digit is not 0, and (b) the two digits are different will form a new 2-digit number when the digits are interchanged.
What are the largest three digit prime number whose digits are all primes?
The largest three digit prime number whose digits are all primes is 773.
Which the largest 3 digit prime number whose digits all primes?
The largest 3 digit number whose digits are all primes is 777. The largest 3 digit number with different prime digits is 753.
The sum of the digits of a two-digit number is 12 If the digits are interchanged the number is increased by 54 What is the original number?
39
How many two-digit primes have the sum of the digits equal to 8?
Three of them.
Largest three digit prime number whose digits are all primes?
How about: 773
Is a 3-digit number all the digits are different the first and second digits are multiples of 3 the first digit is greater than the second digit?
Not necessarily. Consider 444. The digits are not different. The first and second digits are not multiples of 3 The first digit is not greater than the second digit. In spite of all that, 444 is a 3-digit number
What is the unit's digits of the product of the first 21 prime numbers?
Oh, dude, you want to know the unit's digits of the product of the first 21 prime numbers? Well, let me casually tell you that the unit's digit of a product depends on the unit's digits of the numbers being multiplied. Since the unit's digit of all prime numbers greater than 5 is either 1, 3, 7, or 9, the product of the first 21 prime numbers will end in a unit's digit that is a result of multiplying these digits together. Cool, right?
Which is greater the greatest whole number with 4 digits or the least whole number with 5 digits?
Any 5-digit number is greater than a 4-digit one.
How many up numbers of any size have primes only as digits?
An n-digit number has 4^n such numbers.
Four digit number greater than 9000 hundreds digit is twice the tens digit ones digit is greater than the tens digit the sum of the digits is twenty?
9218 9425
