Write 1111......(243 times) i.e. a 243 digit number with all 1s. Prove that it is divisible by 243.

3 Answers  

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A person wanted to withdraw X rupees and Y paise from the bank. But cashier made a mistake and gave him Y rupees and X paise. Neither the person nor the cashier noticed that. After spending 20 paise, the person counts the money. And to his surprise, he has double the amount he wanted to withdraw. Find X and Y.

6 Answers   Bajaj,

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What is the smallest whole number that, when divided by 2, leaves a remainder of 1; when divided by 3, leaves a remainder of 2; and so on, up to leaving a remainder of 9 when divided by 10?

24 Answers   ASD Lab, Athena Health Care,

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There is a safe with a 5 digit number as the key. The 4th digit is 4 greater than the second digit, while the 3rd digit is 3 less than the 2nd digit. The 1st digit is thrice the last digit. There are 3 pairs whose sum is 11. Find the number.

2 Answers  

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There are 25 horses and five tracks. There is no stop clock and we have to find the top 5 horses in the bunch. What is the minimum possible races ?

14 Answers   Amazon,

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what will the Next no. 10,20,30,68,__

7 Answers   Apalya Technologies, EXL, Genpact, Schneider,

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A fly is flying between two trains, each travelling towards each other on the same track at 60 km/h. The fly reaches one engine, reverses itself immediately, and flies back to the other engine, repeating the process each time. The fly is flying at 90 km/h. If the fly flies 180 km before the trains meet, how far apart were the trains initially?

3 Answers  

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8. Given a collection of points P in the plane , a 1-set is a point in P that can be separated from the rest by a line, .i.e the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P). The minimum value of n1(P) over all configurations P of 5 points in the plane in general position (.i.e no three points in P lie on a line) is a) 3 b) 5 c) 2

6 Answers   TCS,

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why do you want to work here?

1 Answers   Qatar Airlines,

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1) You have 8 coins. 3 of them weigh x units, 3 y units, 1 a units and 1 b units. They are all mixed and look identical. You have to find the lightest coin in minimum number of weighing .

9 Answers   Bhel, Mechanical, Microsoft, Oracle,

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A woman took a certain number of eggs to the market and sold some of them. The next day, through the industry of her hens, the number left over had been doubled, and she sold the same number as the previous day. On the third day the new remainder was tripled, and she sold the same number as before. On the fourth day the remainder was quadrupled, and her sales the same as before. On the fifth day what had been left over were quintupled, yet she sold exactly the same as on all the previous occasions and so disposed of her entire stock. What is the smallest number of eggs she could have taken to market the first day, and how many did she sell daily? Note that the answer is not zero.

2 Answers   Athena Health Care,

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There is a bucket with lots of marbles. Some are red, some are blue, some are green and some are orange. We don't know the quantity of any. With your closed eyes how many minimum number of marbles you will pick so as to 100% sure that atleast 2 marbles have the same colors.

14 Answers   TCS,

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