Directions: What should come at the place of question mark (?) in the following questions? |
\[36-[18\,\,\{14-(15-4\div 2\times 2)\}]=?\] |
A) 23
B) 24
C) 21
D) 25
Correct Answer: C
Solution :
\[36-[18-\{14-(15-4\div 2\times 2\}]\] |
\[=36-\left[ 18-\left\{ 14-\left( 15-4\times \frac{1}{2}\times 2 \right) \right\} \right]\] |
\[=36-[18-\{14-(15-14)\}]\] |
\[=36-[18-\{14-(11)\}]\] |
\[=36-[18-\{14-11\}]\] |
\[=36-[18-3]=36-15=21\] |
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