Question
An Indian express train is traveling at 9/15th of its
normal speed and takes 45 hours to reach its destination. How much time would be saved if the train were running at its usual speed?Solution
ATQ,
Let the original speed of the Indian express train be 15x km/hr Speed with which it is running = 9x km/hr When train runs with speed of 9x km/hr it takes 45 hours When it will run with speed of 15x km/hr, the train will take = (45 × 9x)/15x = 27 hours Therefore, difference in time taken = 45 – 27 = 18 hours
What should come in place of (?) question mark in the given number series.
81, 73, 66, 60, 55, ?
14 6 4 4 ? 48
...What should come in place of (?) question mark in the following number series.
5, 11, 23, 47, 95, ?
In each of the following number series, one term is missing. Find the missing term.
1, 4, 9, 16, 25, ?
What will come in place of the question mark (?) in the following series?
4, 11, 32, 95, 284, 851, ?
156, 182, 210, 240, 272, ?
31    32      35      ?      47       56
...What should come in place of (?) question mark in the following number series.
1, 2, 6, 24, 120, ?
What value should come in the place of (?) in the following number series?
71, 72, 76, 103, ?, 244254, ?, 1022, 1150, 1214, 1246
Relevant for Exams:
