Question
A person is jogging at 10 m/sec in the same direction of
a train. The train crosses him in 6 seconds. If the speed of the train is 90 km/hr, find the time it takes to cross a tunnel of 60 metres.Solution
Train speed = 90 × (5/18) = 25 m/sec
Relative speed = 25 - 10 = 15 m/sec
L / 15 = 6 ⇒ L = 90 metres
Time to cross the tunnel = (90 + 60)/25 = 150/25 = 6 seconds
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Select the correct mirror image of the given figure when the mirror is placed at MN as shown below.
Select the option that represents the letters that, when placed from left to right in the blanks below, will complete the letter series.
_ T M _ ...
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b) He is happy.
Inference : He is poor.
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G _ ...
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In a certain code language, 'YATCH' is coded as 67 and 'DINE' is coded as 40. How will 'MANGO' be coded in that language?
Statements:
1. All papers are stationery.
2. Some stationery are books.
3. No book is a pen.
Conclusions :
I. Some...
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