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Q: How do you use repeated subtraction to find how many groups of 7 are in 28?
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When using repeated subtraction how many times is 7 subtracted from 42 until 0 is reached?

It is 9 times when it is subtracted from 42 and until reached 0


What is it called when you combine equal groups to find how many in all?

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How many different combinations do 3 alphanumeric characters have?

With 26 letters and 10 numerical digits, you have 36 characters altogether. If characters may be repeated, then the total numnber of 3-character groups is (36)^3 = 46,656. If characters may not be repeated, then the number of groups is (36 x 35 x 34) = 42,840 .


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How do you find how many pairs are there in any given group of numbers?

If there are n numbers in the group, there aren2 ordered pairs if the numbers can be repeated,n*(n-1) ordered pairs if the numbers cannot be repeated,n2/2 pairs if the numbers can be repeated,n*(n-1)/2 pairs if the numbers cannot be repeated.


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The word 'subtraction' is the noun form of the verb to subtract, a word meaning to take away. The noun 'subtraction' is a word for the process of taking a part away from the whole.


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The first two number are called in a subtracting problem?

Each part of a subtraction problem has a name. Remainder is what is left over (answer). When you are subtracting to compare two groups, or to find out how many more things are needed, this is called the difference. The number being taken away or subtracted is the subtrahend. The number from which the subtrahend is taken is called minuend.