Question
1500 metres long train crosses a man who is moving in
the same direction with a certain speed in 30 seconds. If the same train can cross a pole in 20 seconds with the same speed, then find the speed of the man. TYPE 12Solution
Let the speed of the man be ‘x’ m/sec. Speed of train = 1500/20 = 75 m/sec Relative speed of the train = (75 – x) m/sec According to the question, => (75 – x) = 1500/30 => x = 75 – 50 => x = 25 Therefore the speed of the man = 25 m/sec
Find which one of the given words cannot be made from the letters of the given word.
‘ FORWARD ’
...Statement: Â Â Â Â Â Â Â
Some Cream are Lotion. Â Â Â Â Â Â
No Lotion is Oil. Â Â Â Â Â Â Â
No Cream is Shampoo. Â Â Â Â Â
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BIOTECHNOLOGY
Which among the following words can be formed using the letters of the given word only once?
POTASSIUM
Find which one of the given words cannot be made from the letters of the given word.
‘ ENCOURAGEMENT ’
...From the given alternative words, select the word which cannot be formed using the letters of the given word only once.
DEMOCRATIZATION
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