If 5 @ 2 = 17 and 6 @ 3 = 27, what is 7 @ 4?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 39.
Logic: (1st no × 2nd no) + (1st no + 2nd no)
5 @ 2 = (5 × 2) + (5 + 2) = 10 + 7 = 17
6 @ 3 = (6 × 3) + (6 + 3) = 18 + 9 = 27
Then, 7 @ 4 = (7 × 4) + (7 + 4) = 28 + 11 = 39