What is the m<2 if m<4 = 81° and m<3 = 40°?

These are the answer selections

40°

59°

41°

60°

(1) 24 kmph (2) 54 kmph (3) 72 kmph (4) 81 kmph 18. Two trains are running ... The length of the faster train is (l) 170m (2) 100 m (3) 98 m (4) 85 m 19. In a kilometre race, if A gives B a headstart of 40 m, then A wins by 19 seconds.

=40