XAT 2020 — QA & DI Question 2
MiscellaneousEasy
If A Ê B = (A + B) × B, then what is (5 Ê 2) Ê 5 ?
Answer & solution
95
- B
275
- C
125
- D
74
- E
200
Solution
Given, A Ê B = (A + B) × B
∴ (5 Ê 2) = (5 + 2) × 2 = 14
Now, (5 Ê 2) Ê 5 = 14 Ê 5
⇒ 14 Ê 5 = (14 + 5) × 5 = 19 × 5 = 95
Hence, option (a).