In the following number series only one number is wrong. find out the wrong number.
93 309 434 498 521 533
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Solution
In the following number series only one number is wrong. find out the wrong number.
4 10 22 46 96 190 382
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Solution
In the following number series only one number is wrong. find out the wrong number.
53 318 1584 6360 19080 38160
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Solution
In the following number series only one number is wrong. find out the wrong number.
18 22 33 47 72 108
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Solution
A merchant has 1000 kg of sugar, part of which he sells at 8% profit and the rest at 18% profit. He gains 14% on the whole. The quantity sold at 18% profit is.
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Solution
A boat takes 90 minutes less to travel 36 km downstream than to travel the same distance upstream. If the speed of the boat in still water is 10 kmph, the speed of the stream is:
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Solution
Let the speed of stream is x kmph.
∴
x = 2 kmph
Two trains, one from Jaipur to Patna and the other from Patna to Jaipur start simultaneously. After they meet, the trains reach their destinations after 9 hours and 16 hours respectively. The ratio of their speed is:
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Solution
Ratio of speed =
Two men start together to walk to a certain destination, one at 3 kmph and another at 3.75 kmph. The Latter arrives half an hour before the former. The distance is:
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Solution
Distance = = 7.5 km
2 men and 3 boys can do a piece of work in 10 days while 3 men and 2 boys can do the same work in 8 days. In how many days can 2 men and 1 boy do the work?
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Solution
(2M + 3B) × 10 = (3M + 2B) × 8
⇒ 20M + 30B = 24M + 16B
⇒ 2M = 7B
∴ 2M + 1B = 7B + 1B = 8B
∴ Required time = days