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(#M40001499) CTS QUESTION Keep an EYE

If all the 6 are replaced by 9, then the algebraic sum of all the numbers from 1 to 100 (both inclusive) varies by how much?

Asked In CTS Neha Jain (14 years ago)

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(#M40001833) CTS QUESTION Keep an EYE

A starts at 11:00AM and travels at a speed of 4km/hr. B starts at 1:00PM and travels at 1km/hr for the first 1hr and 2km/hr for the next hr and so on. At what time they will meet each other ?

Asked In CTS Neha Jain (14 years ago)

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(#M40001832) CTS QUESTION Keep an EYE

You are having 31kg of rice. You are provided with a 1kg stone for weighing. In how many weights the 31kg of rice can be weighed. ?

Asked In CTS Neha Jain (14 years ago)

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(#M40001834) CTS QUESTION Keep an EYE

There are 80 coins, among them one coin weighs less compared to other. You are given a physical balance to weigh. In how many weighing the odd coin can be found.

Asked In CTS Neha Jain (14 years ago)

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(#M40001500) CTS QUESTION Keep an EYE

A secret can be told only to 2 persons in 5 minutes .the same person tells to 2 more persons and so on . How long will take to tell it to 768 persons ?
a) 47.5 min b)50 min c) 500 min d)49 min

Solution

at start one person will tell to 2 persons, it will take 5 min, now that 1+2 = 3 persons will tell this to next 6 persons, then 1+2+6 = 9 persons will tell to next 18 persons, then 1+2+6+18 = 27 persons to 54 similarly 1+2+6+18+54 = 81 persons will tell this to 162 persons similarly 1+2+6+18+54+162 = 243 persons will tell this to 486 persons, upto this step total persons who have listened this secret = 2+6+18+54+162+486 = 728, and total time taken upto this step = 5*6 = 30 min, now next 5 min will be sufficient to tell this message to next 40 persons so total time taken = 35 min

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Asked In CTS Neha Jain (14 years ago)

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