Question
A man can row at 2 kmph in still water. If the velocity
of current is 1 kmph and it takes him 4 hour to row to a place and come back, how far is the place?Solution
Let the distance be x km. Speed upstream = 2 – 1 = 1 kmph Speed downstream = 2 + 1 = 3 kmph => (x/3) + (x/1) = 4 => (x + 3x)/3 = 4 => 4x = 12 => x = 3 km
Select the option that is related to the first number in the same way as the third number is related to the fourth number.
729: ? :: 432: 408
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Complete the analogy.
49 : 65 :: 64 : ?
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Some telescopes are periscopes.
Some telescopes are microscopes.
Some telescopes are kaleidoscopes.
Conclusio...
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Taka : Bangladesh :: Lira : ?
Find the odd one out.
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