All types of puzzles asked in SBI exam.


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Implement a multiple-reader-single-writer lock given a compare-and-swap instruction. Readers cannot overtake waiting writers.

1 Answers  


3 boys go to the restaurant. Their bill was 75 rs.. So they contributed 25 each. Manager then gives 5 rs back to the waiter and then waiter gave 3 rs back to them and put 2 rs into his pocket.. So their actual contribution is 24 because they got 1-1 rs back. so 24*3=72 and 2 rs into the waiter's pocket. so 74+2=74 where is 1 rs?

55 Answers   College School Exams Tests, Garrison, Google, HCL, Jabong, Merlion, Rainbow Civil Engineers, Renault, TATA, Watair, Wipro,


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

7 Answers   Apalya Technologies, EXL, Genpact, Schneider,


(9^-2)*81*(5/6)

3 Answers  


Find the smallest number such that if its rightmost digit is placed at its left end, the new number so formed is precisely 50% larger than the original number.

9 Answers   CTS, Google,


I'm something, i appear twice in a week but none in a day.I appear once in a year but none in a month. what am i?

6 Answers   Oliver,


A person travels on a cycle from home to church on a straight road with wind against him. He took 4 hours to reach there. On the way back to the home, he took 3 hours to reach as wind was in the same direction. If there is no wind, how much time does he take to travel from home to church?

3 Answers  


You are seat in one room having switch board containing 3 switchs & its connection to bulb in another room (only one is right connection).terms- you can turn on max 2 buttons and once you can go to see the answer which is right one?

7 Answers  


One side of the bottom layer of a triangular pyramid has 12 balls. How many are there in the whole pyramid? Note that the pyramid is equilateral and solid.

2 Answers  


There are 8 stones which are similar except one which is heavier than the others. To find it, you are given a pan balance. What is the minimal number of weighing needed to find out the heaviest stone ?

19 Answers   iFlex, TCS,


Once a week a wagon driver leaves his hut and drives his wagon to the river dock to pick up supplies for his town. At 4:05 PM, one-fifth of the way to the dock, he passes the Temple. At 4:15 PM, one-third of the way, he passes the Preetam-Da-Dhabaa. At what time does he reached the dock?

1 Answers  


Three friends went to hotel for breakfast . After having breakfast total bill was Rs 25 . Each one contributed Rs 10. So total was Rs 30 . 30 is paid. waiter gave Rs 5 back to them . Three friend gave Rs 2 tips to waiter . From remaining Rs 3 each one took one rupee. As each one contributed ten . And each friend recieved one rupee back. Means each one had breakfast in nine rupee. So three friend had breakfast in 9+9+9=27. And Rs 2 is given to tips to waiter. So total money for breakfast for three friend was 27+2=29. Where is remaining one rupee?

5 Answers   IIT,


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