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There are 19 red balls and one black ball . Ten balls are put in one jar and the remaining 10 are put in another jar. what is the possibility that the black is in the right jar.
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three clocks where set to true time .First run with the exact time ..second slows one minute/day. third gains one minute/day. after how many days they will show true time.
2hours after a freight train leaves Delhi a passenger train leaves the same station travelling in the same direction at an average speed of 16 km/hr. After travelling 4 hrs the passenger train overtakes the freight train. The average speed of the freight train was?
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Wind flows 160 miles in 330 min, for travelling 80 miles how much time does it require?
A car travels 12 kms with a 4/5th filled tank.How far will the car travel with 1/3 filled tank?
19.) When two unbiased dice are tossed simultaneously, the numbers that appear on the top surface of the two dice are a and b.What is the probability that a^b is a perfect square? (a^b=a to the power of b) a)1/3 b)2/3 c)23/36 d)11/18 ans: 20.) When two unbiased dice are tossed simultaneously, the numbers that appear on the top surface of the two dice are a and b.What is the probability that (a × b) is a perfect square? a)5/36 b) 2/9 c) 7/36 d) 1/6
A car covers a certain distance taking 7 hours in forward journey. During the return journey, speed was increased by 12 kmph and it takes 5 hours. What is total distance covered? (a) 210 km (b) 70 km (c) 440 km (d) 220 km (e) None of these
Two trains 100 meters and 120 meters long are running in the same directions with speed of 72 km/hr and 54 km./hr. in how much time will the first train cross the second?
alok and bhanu play the following min-max game. given the expression N=40+X+Y-Z,where X,Y,Z are variables representing single digits (0 to 9),Alok would like to maximize N while Bhanu would like to minimize it.Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X,Y or Z).Alok then chooses the next value and Bhanu, the variable to substitute the value.Finally Alok proposes the value for the remaining variable.Assuming both play to their optimal strategies,the value of N at the end of the game would be: a)49 b)51 c)31 d)58
ram sita hai ,to sita kaun hai?
A persons salary iis decreased by steps of 20%, 15% and 10%. What will be the percentage decrease, if the salary is decreased in a single shot?
E=I*I*R what is the effect of E when I becomes I/2
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