English and Logical Reasoning Prep GuideLogical ReasoningMathematical Operations
If (9 6=45,7 4=33 ) and (6 4=20 ), then what is the value of (5 3 ) ?
Options
- A13
- B16
- C24
- D10
Correct answer
B. 16
Step-by-step solution
The logic here is as follows, (9^2-6^2=81-36=45 ) (7^2-4^2=49-16=33 ) (6^2-4^2=36-16=20 ) Similarly, (5^2-3^2=25-9=16 ) Thus, the value of (5 3=16 ).