RRB Group D Practice

Number System Questions for RRB Group D Exam

RRB Group D Number System 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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Number System RRB Group D Questions

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Q1If the LCM of two numbers is 192 and their HCF is 32. If the first number is 64, find the second number.3197
RRB Group D2025LCM and HCF
Q2The sum of two numbers is 50 and their LCM is 429. The two numbers are:2607
RRB Group D2025LCM and HCF
Q3The sum of two numbers is 60 and their HCF and LCM are 12 and 72 respectively. Then find the sum of the reciprocals of the two numbers.
RRB Group D2025LCM and HCF
Q4The sum of two numbers is 88 and their L.C.M. is 870. The two numbers are:
RRB Group D2025LCM and HCF
Q5The sum of two numbers is 54 and their LCM is 195. The two numbers are:
RRB Group D2025LCM and HCF
Q6If the HCF of three numbers is 23 and they are in the ratio 1:2:3, then the numbers are:
RRB Group D2025LCM and HCF
Q7If the HCF of two numbers is 12 and their product is 2160, what is the LCM of the two numbers?
RRB Group D2026LCM and HCF
Q8The product of two numbers is 324 and their HCF is 3. Then their LCM will be:
RRB Group D2026LCM and HCF
Q9Find the smallest number to be added to 1000 so that 45 divides the sum exactly.1265
RRB Group D2025Divisibility & Remainder
Q10Find the greatest number that exactly divides 46, 98 and 74.
RRB Group D2026LCM and HCF
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Q11The sum of the first 12 prime numbers is:
RRB Group D2025Prime Numbers
Q12The sum of the first 9 prime numbers is:
RRB Group D2025Prime Numbers
Q13The number of prime numbers lying between 309 and 320 is:
RRB Group D2025Prime Numbers
Q14Which of the following is NOT a prime number?
RRB Group D2025Prime Numbers
Q15The sum of the first 11 prime numbers is:
RRB Group D2025Prime Numbers
Q16The number of prime numbers between 472 and 486 is:
RRB Group D2025Prime Numbers
Q17The number of prime numbers between 308 and 320 is:
RRB Group D2025Prime Numbers
Q18Which of the options has the two prime numbers whose product is the biggest even number less than 30?805
RRB Group D2025Prime Numbers
Q19The sum of the first 19 prime numbers is:
RRB Group D2025Prime Numbers
Q20The number of prime numbers lying between 415 and 428 is:
RRB Group D2025Prime Numbers
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Number SystemBinary Number SystemCo-prime NumbersComposite NumbersCube and Cube RootCyclicityDifferent Types of Remainder ProblemsDivisibility Rule of 11
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Divisibility Rule of 12Divisibility 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 FactorsOdd 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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