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Number system Practice Questions - Page 3

Questions 21–30 of 31 · Page 3 of 4

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Questions
31
Solutions
All inline
Q21Find the product of HCF and LCM of 15 and 20.MediumSolve →Q22If a number leaves 2 when divided by 5, and 3 when divided by 7, find the smallest such number.HardSolve →Q23How many prime numbers are there between 20 and 50?MediumSolve →Q24What is the square of 25?EasySolve →Q25How many factors does 36 have?EasySolve →Q26Convert binary 1011 to decimal.MediumSolve →Q27What is the largest 2-digit number divisible by both 6 and 9?MediumSolve →Q28Find the least number which leaves remainders 1, 2, 3 when divided by 2, 3, 4 respectively.HardSolve →Q29Find the remainder when 2^50 is divided by 13.HardSolve →Q30What is the unit digit of 17^3?EasySolve →
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