A man can row 7.5 kmph in still water and he finds that it takes him twice as long to row up as to row down the river. Find the rate of stream.
A boat moves downstream at the rate of one km in 5 minutes and upstream at the rate of 4 km an hour. What is the velocity of the current?
The current of a stream runs at the rate of 2 km/hr. A motor boat goes 10 km upstream and back again to the starting point in 55 min. Find the speed of the motor boat in still water?
If ‘X $ Y’ means ‘X is father of Y’; ‘X # Y’ means ‘X is mother of Y’; ‘X × Y’ means ‘X is sister of Y’, then how is D related to N in N # A $ B × D ?
If in a certain language, MADRAS is coded as NBESBT, how is BOMBAY coded in that code?
Four usual dice are thrown on the ground. The total of numbers on the top faces of these four dice is 13 as the top faces showed 4, 3, 1 and 5 respectively. What is the total of the faces touching the ground?
A river flows west to east and on the way turns left and goes in a semi-circle round a hillock, and then turns left at right angles. In which direction in the river finally flowing?
P, Q, R, S, and T are sitting on a bench. P is sitting next to Q, R is sitting next to S, S is not sitting with T who is on the left end of the bench. R is in the second position from the right. P is to the right of Q and T. P and R are sitting together. In which position P is sitting?
Find the missing element in the series given below: ACE ? MOQ …..SUW
Find the missing element in the series given below: ABD EFH IJL MNP QRT ?