| \[\mathbf{19}-\mathbf{18}+\mathbf{17}-\mathbf{16}+\mathbf{15}-\mathbf{14}+\mathbf{13}-\mathbf{12}=[\,\,?\,\,]\] |
A) 124
B) 48
C) 4
D) 1
Correct Answer: C
Solution :
\[~(\text{19}-\text{18})+(\text{17}-\text{16})+(\text{15}-\text{14})+(\text{13}-\text{12})\] \[=\text{1}+\text{1}+\text{1}+\text{1}=\text{4}\]
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