Some equations are solved on the basis of a certain system. Find the correct…
2017
Some equations are solved on the basis of a certain system. Find the correct value for “?” on that basis.
8 6 = 28
11 5 = 96
15 * 7 = ?
- A.
105
- B.
208
- C.
147
- D.
176
Attempted by 22 students.
Show answer & explanation
Correct answer: D
Rule = (1st number + 2nd number) × (1st number - 2nd number)
8,6 → (8+6)×(8-6) = 14×2 = 28
11,5 → (11+5)×(11-5) = 16×6 = 96
15,7 → (15+7)×(15-7) = 22×8 = 176
Correct Answer: Option 4 (176)