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Total number of letters in the word INCREASE is 8. ∴ Total number of ways = 8!/2! Number of ways when 2 E’s are together = (7! 2!)/2! = 5040 ∴ Number of ways when 2 E’s are not together = 20160 – 5040 = 15120
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A 130 m long train crosses another 250 m long train running in the opposite direction in 10 seconds. If the shorter train crosses a pole in 10 seconds, ...
Ratio of the lengths of two trains ‘X’ and ‘Y’ is 3:4 respectively and the ratio of time taken by them to cross a pole is 2:3 respectively. If s...
A train travelling with a speed of 54 km/h can cross a pole in 6 seconds. Find the time taken by the train to cross a 180 metres long platform if the sp...
Train X running at a speed of 35 km/hr crosses train Y in 18 seconds. Find the speed of train Y (in km/hr), if the sum of the length of train X and Y is...
