Exams › SSC CGL (Prelims) › General
If the operation '$' is defined so that 8 $ 3 = 32 and 6 $ 4 = 30, then what is the value of 5 $ 4?
- 28
- 20
- 24
- 25
Correct answer: 25
Solution
The rule is a $ b = a*b + a. For 8 $ 3 = 24 + 8 = 32 and 6 $ 4 = 24 + 6 = 30, both fit. Thus 5 $ 4 = 20 + 5 = 25.
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