HCF & LCM of numbers

Are you preparing for campus placements,Banking,SSC, IAS, Insurance,Defence and other competitive exams? Then, make sure to take some time in practicing the LCM & HCF questions and answer in Quantitative Aptitude. Moreover, only those questions are included that are relevant and likely to be asked in any competitive exam. So, take these questions and answer, brush up your skills and practice to stay fully prepared for any your exam.

  • Q29.At a bookstore, "BOOK FOR SALE" is flashed using neon lights. The words are individually flashed at intervals of 2(1/2), 4(1/4), 5(1/8) seconds respectively, and each word is put off after a second. The least time after which the full name of the bookstore can be read again is:

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  • Q30.Three pieces of Chocolate Pastry of weight 4(1/2)lbs, 6(3/4)lbs and 7(1/5)lbs respectively are to be divided into parts of equal weights. Further, each part must be as heavy as possible. If one such part is served to each guest, then what is the maximum number of guests that could be entertained?

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  • Q31.A token machine generates token every 15 minutes. A second token machine generates after every 18 minutes. A third token machine generates after every 24 minutes. If all the three machines generates token at the same time at 10 o'clock in the morning, at what other time will they generate tokens together?

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  • Q32.Six archers shoot arrows at a target at an interval of 4, 5, 6, 8, 10 and 12 seconds respectively. The number of times they would shoot the arrows together at the target in an hour is:

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  • Q33.Five forms of dance are taught in a dance academy, viz, Salsa, Contemporary, Hip Hop, Kathak and Bharatnatyam. The Bharatnatyam Group meets every second day, the Kathak Group meets every third day, the Hip Hop Group meets every fourth day, the Contemporary Group meets every fifth day and the Salsa Group meets every sixth day. How many times do all the five groups meet on the same day within 360 days?

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  • Q34.Ram wants to utilise his unused field and plan to plant some trees, he plant 88 guava trees, 132 papaya trees and 220 sugarcane trees in equal rows (in terms of number of trees). Also, he wants to make distinct rows of trees (i.e. only one type of tree in one row).Calculate the minimum number of rows?

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  • Q35.A rectangular courtyard 15 meters17 cms long 9 meters and 2 cms wide is to be paved exactly with square tiles, all of the same size. What is the largest size of the tile which could be used for the purpose?

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