Campus Recruitment Non-Tech Quiz-16

Two trains each having a length of 200 meters moving in opposite direction crossed each other in 10 seconds. If first train crossed a 250 metre long platform in 30 seconds, then the ratio of their speeds is:

A man can row the boat x km downstream and the same distance upstream in 12 hours. Also he can row the boat can row 4x km downstream in 10 hours. In what time, he can row the x km distance in upstream?

P is the mother of K; K is the sister of D; D is the father of J. How is P related to J?

Find the missing series

1, 5, 13, 25, ?