# Can you guarantee that it is always possible to choose three numbers that will add up to a multiple of three from any set of five positive whole numbers?

no because first of all you should have said different positive whole #s because now i can say 1*1*1=1 which is not a multiple of 3 but assuming they are different it is… still a no because 2*1*5=10 which is not a multiple of 3

# What are three numbers from 11 to 19 that add up to make a multiple of 10?

There are not any numbers from 11 through 19 that are multiples of 10.

# Three consecutive numbers that add up to a multiple of three?

EVERY three consecutive numbers add to a multiple of 3: Proof: numbers are n, n + 1 and n + 2. The total is 3n + 3 or 3(n + 1) This means that for any three consecutive numb…ers, the total is 3 times the middle number.

# What three numbers add up to 99?

90 + 3 + 6

# What three numbers adds up to 15?

1, 2 and 12 is one possible triplet.

# What three numbers add up to 87?

1,2 and 84 is one possible triplet. -100, 87 and 100 is another.

# What three numbers add up to 865?

Multitudes of combinations...in what context? Prime numbers or what?

# What are three numbers add up to 50?

Do they have to be all the same numbers? If not, you're a retard if you don't know that! (: just kiddin. I love you!

# How do five threes add up to 100?

They don't. Five threes add up to 15 and that is it! You can write an expression using 5 threes that makes 100, but that is not the same.

# What three numbers add up to 7749?

0 + 0 + 7749. Actually, there are infinitely many solutions to this question.

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# How many numbers must be selected from the set 1 2 3 4 5 6 to guarantee that at least one pair of these numbers add up to 7?

1 and 6 .
2 and 5 .
3 and 4

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# 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

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# What three multiples add up to get 42?

Multiples don't add. Addends add, like 13 + 14 + 15 = 42 but I suspect you want factors,specifically prime factors. 2 x 3 x 7 = 42

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# Which multiples of 3 add up to 36?

12 lots of 3 add up to 36

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# What odd three 3 number has digits that are all the same and add up to 9?

They are: 3+3+3 = 9