SSC JE Mechanical Engineering 2017 Set 3 Paper

Have given,
Condition (1) ⇒ A @ B = A is the father of B.
So E@F = E is the father of F.
Condition (2) ⇒ A # B = A is sister of B.
So G#H = G is sister of H. H is male, so G is female.
Condition (3) ⇒ A! B = A is the son of B,
So F!G = F is the son of G.
Because, G is female,
soG is the mother of F and father is E.
So H is E’s wife’s brother.