The value of a number is for example 7, 70 (but also 8, 80, etc). 7 can refer to the value of seven if it's on its own or if it's on the rightmost position, but in the number 75, seven refers to the value of 70. The same digit can have different values in a place value system where the value represented by a digit depends on its position.
Answer: the answer is C because it is the only one that matches with one pair on the table wich is (4,2)
The numbers -4 and 4 have a sum of zero.
Why?
-4 + 4 = 0.
4 + -4 = 0.
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<u><em>-AnonymousGiantsFan</em></u>