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Q #26
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Infosys Quants Question


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The L.C.M. of two numbers is 4800 and their G.C.M. is 160. If one of the numbers is 480, then the other number is:
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4800 x 160 = 480 x 2nd number
2nd number = 1600

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Q #27
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Infosys Quants Question


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Find the largest number, smaller than the smallest four-digit number, which when divided by 4,5,6 and 7 leaves a remainder 2 in each case.
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Going through option then option 2 is the only number that is satisfying all the cases.

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Q #28
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Infosys Quants Question


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Four bells begin to toll together and then each one at intervals of 6 s, 7 s, 8 s and 9 s respectively. The number of times they will toll together in the next 2 hr is:
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LCM of 6, 7, 8, 9= 336

Number of time they will together = 2 x 60 x 60/336 => 14



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Q #29
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Infosys Quants Question


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Three friends Gerard, Runey work together to dig a hole. Gerard alone can complete the work in 10 days and together they can complete it in 4 days. They earn a total of Rs.1,200. Find the share of Runey if the money that they receive is proportional to the work that they do?
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One day work of Runey = ¼ - 1/10 = 3/20 and 1 day work of Gerard = 1/10 = 2/20 So the ratio of work done = 3:2 So Share of Runey = 3/5 of 1200 = 720

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Q #30
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Infosys Quants Question


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The number of ways in which 15 students A1,A2,---A15 can be ranked, such that A4 is always above A8 is:
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Number of ways of arranging = 15! Number of ways of ranking that A 4 is always above a8 = 15!/2

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