If a*b means 2a + b , then what is 2*5 ?

Question

1) 7

 

2) 9

 

3) 12

 

4) 14

 

5) none of these

 

Answer 1

The advanced term for this (in computer programming) is "operator overloading."  That is, the "*" operator has a new meaning.

 

It is quite easy to understand this problem if it is stated with an "unused" operator, like "♥":

   "If a ♥ b means 2a + b , then what is 2 ♥ 5 ?"

                        2(2) + 5       [a=2  and b=5]

                             9