Six boys G1, G2, G3, G4, G5 and G6 are sitting in a row facing towards the north (not necessarily in the same order). G4 is second to the right of G5. G2 is second to the left of G5. G3 is to the immediate left of G2. G6 is second to the right of G3. How many boys are sitting to the left of G6?

2 3 0 1

2

Answer: 2 In this question you need to first place G2, G3 and G5 and G4