CAT 2003 Slot 2 — QA Question 29
MiscellaneousEasy
Passage / Data
Answer the following question based on the information given below.
Two binary operations ⊕ and * are defined over the set {a, e, f, g, h} as per the following tables:
âââââââ
âââââââ
Thus, according to the first table f ⊕ g = a, while according to the second table g * h = f, and so on.
Also, let f2 = f * f, g3 = g * g * g, and so on.
What is the smallest positive integer n such that gn = e?
Answer & solution
4
- B
5
- C
2
- D
3
Solution
From the second table,
g2 = g * g = h
g3 = h * g = f
g4 = f * g = e
Hence, option (a).