LCM and HCF Questions for RRB NTPC UG Exam
RRB NTPC UG LCM and HCF Questions bring together the published questions available for this exam on PrepShots. Work through the set at your own pace, revise the underlying concepts when needed, and open any question to view its complete solution.
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Showing 1–20 of 53LCM and HCF RRB NTPC UG Questions
Q1The largest four-digit number which when divided by 7, 6 and 10 leaves the remainder 5 in each case, is:Q2The largest four-digit number which when divided by 15, 12 and 14 leaves remainder 5 in each case is:Q3Two bells are rung at intervals of 1,764 seconds and 2,268 seconds, respectively. They are rung together at the start. After how much time will the two bells ring together again for the first time?Q4Trains from Delhi, Lucknow, and Jaipur depart every 12 minutes, 18 minutes, and 27 minutes, respectively. If all depart together at 6:00 am, when will they depart together again?Q5Two numbers are in the ratio 4 : 5. If their LCM is 240, what is the sum of the two numbers?Q6Three numbers are in the ratio 4 : 13 : 9, and their LCM is 6084. Their HCF is:Q7Three numbers are in the ratio 3 : 2 : 13, and their LCM is 6318. Their HCF is:Q8Which of the following pairs of numbers is not coprime?Q9Three numbers are in the ratio 17 : 13 : 8, and their LCM is 7072. Their HCF is:Q10Three numbers are in the ratio 3 : 7 : 2, and their LCM is 8820. Their HCF is:Practice Free →Q11Three numbers are in the ratio 4 : 3 : 13, and their LCM is 4524. Their HCF is:Q12Three numbers are in the ratio 11 : 3 : 2, and their LCM is 2706. Their HCF is:Q13Which of the following is a pair of co-primes?Q14Find the greatest number that divides 75, 105 and 150 exactly.Q15What is the greatest length of a measuring rod that can exactly measure three fabric pieces of lengths 7 m 35 cm, 9 m 45 cm, and 10 m 50 cm?Q16Three numbers are in the ratio of 19 : 7 : 13, and their LCM is 8645. Their HCF is:Q17Three ropes of lengths 54 m, 72 m and 90 m are to be cut into smaller pieces of equal lengths such that no rope is left over. What is the maximum possible length of each smaller piece?Q18Three numbers are in the ratio 3 : 2 : 13, and their LCM is 2574. Their HCF is:Q19Three numbers are in the ratio 9 : 7 : 5, and their LCM is 2205. Their HCF is:Q20Three numbers are in the ratio 3 : 7 : 2, and their LCM is 5376. Their HCF is:
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Binary Number SystemCo-prime NumbersComposite NumbersCube and Cube RootCyclicityDifferent Types of Remainder ProblemsDivisibility Rule of 11Divisibility Rule of 12
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Divisibility Rule of 15Divisibility Rule of 18Divisibility Rule of 2Divisibility Rule of 3Divisibility Rule of 4Divisibility Rule of 6Divisibility Rule of 8Divisibility Rule of 9Divisibility RulesEuclidean AlgorithmEuler's TheoremEven and Odd NumbersEven FactorsFactorialFactors and MultiplesFermat's TheoremHCFHCF and LCMHCF by Prime FactorizationHighest Power in FactorialIntegersLCMLCM by Prime FactorizationNatural NumbersNumber of FactorsNumber SystemOdd FactorsPlace Value and Face ValuePrime FactorsPrime NumbersRational and Irrational NumbersReal NumbersRemainderRemainder TheoremSquare and Square RootSum of FactorsTrailing Zeros in FactorialTypes of NumbersUnit DigitWhole Numbers
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