Quantitative Aptitude Practice questions on HCF and LCM: This practice set has 7 questions with their answers & Explanatory answer covering topics from the areas of Quantitative Aptitude.
1. How many pairs of integers (x, y) exist such that the product of x, y and HCF (x, y) = 1080?
2. Find the smallest number that leaves a remainder of 4 on division by 5, 5 on division by 6, 6 on division by 7, 7 on division by 8 and 8 on division by 9?
3. There are three numbers a,b, c such that HCF (a, b) = l, HCF (b, c) = m and HCF (c, a) = n. HCF (l, m) = HCF (l, n) = HCF (n, m) = 1. Find LCM of a, b, c. (The answer can be "This cannot be determined").
4. How many pairs of positive integers x, y exist such that HCF of x, y = 35 and sum of x and y = 1085?
5. How many pairs of positive integers x, y exist such that HCF (x, y) + LCM (x, y) = 91?
6. Sum of two numbers x, y = 1050. What is the maximum value of the HCF between x and y?
7. The sum of two non co–prime numbers added to their HCF gives us 91. How many such pairs are possible?
Answer Key –
3. Cannot be Determined
Solution Link - http://iim-cat-questions-answers.2iim.com/quant/number-system/hcf-lcm/
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