1.

Which pair of calculations gives two different answers?

A.  \[(\text{16}+\text{9})\] and \[(\text{9}+\text{16})\]               
B.  \[(\text{9}\div \text{3})\] and \[(\text{3}\div \text{9})\]
C.                   \[(\text{7}\times \text{3})\] and \[(\text{3}\times \text{7})\]
D.  \[(\text{5}+\text{4}+\text{11})\]and\[(\text{4}+\text{11}+\text{5})\]
Answer» C.                   \[(\text{7}\times \text{3})\] and \[(\text{3}\times \text{7})\]


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