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Think of any multiple of three. That number plus three is the next-higher multiple of three. Right?
For example, 12 is a multiple of 3 (3 x 4). Add 3 and you get 15 (3 x 5).
So 15 - 3 = a multiple of 3.
Same thing will work with ANY multiple of 3, no matter how high you go. Can you see why?
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The sum of two numbers is 84 One number is three times the other What are the numbers?
lets call the one number X and the other Y so y equals 3X so 3X plus X equals 84 so 4X equals 84 we divide by 4 so x equals 21 so y equals 21 times 3 equals 63 so the two numbers are 63 and 21
If two dice are thrown what is the probability that at least one of them shows a number greater than 3?
This is the same as 1 minus the probability that neither of them are greater than three. This is 1, minus the probability of getting greater than three, squared. Rolling higher than three has a 1/2 probability, so: P(at least one greater than 3) = 1 - (1/2)2 = 1 - 1/4 = 3/4
How many three digit numbers equal 17?
There are no three-digit numbers that equal 17. In fact, there are no numbers with more or less than two digits that equal 17. In fact, in the whole infinite supply of numbers, there is only one single number that equals 17. That number is . . . . . . . 17 .
What is a three digit number a square number and the product of its digits is two?
The only three-digit number that fits the criteria of being a square number and having a product of its digits equal to two is 128. This is because 128 is a square number (11^2 = 121, 12^2 = 144) and the product of its digits (1 x 2 x 8) equals 16, which is not equal to two. Therefore, there is no three-digit number that meets all the given conditions.
What is the probability of of selecting a multiple of two or three between one and ten?
It is 0.7
