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How many three figure numbers have digits that add up to seven?
36
How many combinations of three digits of 0-9 will add up to 14?
10
Why do no digits of a prime number add up to 9?
Because they're in multiples of three - a quick way to tell if a number is a multiple of three is to add up the digits and see if the digits add up to a multiple of three e.g 576, 5+7+6=18, 1+8=9, 9 is a multiple of three
What is the largest three digit number whose digits add to 20?
992
How many two-digit numbers have digits that add to thirteen?
Assuming you mean digits and not didgets, the answer is 6.
How many three figure numbers have digits that add up to seven?
36
Which three digits numbers do the digits add up to 25?
There are a variety of three digits that add up to 25. Examples include 9, 8 and 8.
How many combinations of three digits of 0-9 will add up to 14?
10
A three digit number whose digits add up to 900?
Three digits can't possibly add up to 900. The largest possible sum of 3 digits is (9 + 9 + 9) = 27.
Why do no digits of a prime number add up to 9?
Because they're in multiples of three - a quick way to tell if a number is a multiple of three is to add up the digits and see if the digits add up to a multiple of three e.g 576, 5+7+6=18, 1+8=9, 9 is a multiple of three
What is the largest three digit number whose digits add to 20?
992
Is 133 divisible by three?
No, because if you add the three digits together, you get 7 which isn't divisible by 3
What is the smallest 4 digit number whose digits add up to 18?
22
Is seventytwo a multiple of three?
yes 72/3 equals 24. an easy way to find out if a number is divisible by three is to add up all the digits. if the sum of the digits is divisible by three, the whole number is divisible by three.
How many two-digit numbers have digits that add to thirteen?
Assuming you mean digits and not didgets, the answer is 6.
What odd two digits number add to make three?
1.5 and 1.5 easy peasy
What number is a factor of 36 and it is a multiple of 3 and as 2 digits and they add up to three?
12
