The graphs of lines x + 2y - 3 = 0 and 2x + 4y + 11 = 0
intersect at each other
coincide with each other
are parallel to one another
are perpendicular to each other
There are 10 persons in a party. If each one of them shakes hand with others exactly once. The total number of handshakes is
105
55
45
None of these
A man and his wife appear for an interview for two posts. The probability of husband's selection is and that of wife's selection . What is the probability of only one of them will be selected ?
A man buys two books at Rs 410 and sells both at same price. One gives him a profit of 15% and another a loss of 10%. The cost price of both book is
110, 260
120, 290
180, 230
None of these
Out of 12 observations arranged in ascending order, the sixth and seventh observations are 14 and 15 respectively. Find the median of all the 12 observations.
29
14.5
15
None of these
Find the least number of square tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad
902
800
814
None of these
A motor boat whose speed is 15 km/h in still water goes 36 km upstream and comes back to the starting point in 5 hours. Find the speed of the stream
5 km/h
10k/h
Cant determine
3km/h
D.
3km/h