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Number System
HCF, LCM, Divisibility, Prime Numbers, Factors and Multiples
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Take a full mock →Q1 · Number System · EASY
The HCF and LCM of two numbers are 12 and 420 respectively. If one of the numbers is 60, what is the other number?
Q2 · Number System · HARD
A number when divided by 357 leaves remainder 39. What will be the remainder when the same number is divided by 17?
Q3 · Number System · EASY
What is the smallest number which when divided by 12, 15, and 20 leaves a remainder of 5 in each case?
Q4 · Number System · HARD
The sum of the squares of three consecutive odd numbers is 2531. What is the middle number?
Q5 · Number System · EASY
The sum of two numbers is 84 and their HCF is 12. How many such pairs of numbers are possible?