## QA – Placement Quizzes | Numbers, LCM and HCF | Question 14

Two numbers are in the ratio of 5:7. If their LCM is 105, what is the difference between their squares ? (A) 216 (B) 210… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 13

HCF of two numbers is 11 and their LCM is 385. If the numbers do not differ by more than 50, what is the sum… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 10

What is the largest number which divides 26, 47, 84 to leave remainders 2, 3, 0 respectively ? (A) 4 (B) 6 (C) 8 (D)… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 9

What is the smallest number which when divided by 6, 9, 11, 16 and 22 leaves remainder 3 in each case ? (A) 3267 (B)… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 8

A number leaves remainders 1, 4 and 7 on being divided successively by 3, 5 and 8 respectively. What is the product of the remainders… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 7

On dividing 201098 by a certain number, the quotient is 67 and the remainder is 31. Find the divisor. (A) 3011 (B) 3001 (C) 3021… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 6

What must be subtracted from the greatest five digit number so as to find the greatest five digit number divisible by 23 ? (A) 22… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 5

What should be assigned to # so that 2582#724 is divisible by 11 ? (A) 4 (B) 5 (C) 6 (D) 7 Answer: (C) Explanation:… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 4

What is the total number of prime factors in the expression 1212 x 1616 x 1818 ? (A) 46 (B) 154 (C) 3456 (D) 2… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 3

What is the unit’s digit in the product (267)153 x (66666)72 ? (A) 7 (B) 6 (C) 1 (D) 2 Answer: (D) Explanation: The unit’s… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 2

Which of the following are prime numbers ? (i) 147 (ii) 327 (iii) 547 (iv) 637 (A) 147 (B) 327 (C) 547 (D) 637 Answer:… Read More »

## QA – Placement Quizzes | Numbers, LCM and HCF | Question 1

What could be the maximum value of Y in the following equation given that neither of X, Y, Z is zero? 5X8 + 3Y4 +… Read More »

## Find all divisors of a natural number | Set 2

Given a natural number n, print all distinct divisors of it. Examples: Input : n = 10 Output: 1 2 5 10 Input: n =… Read More »

## Find all divisors of a natural number | Set 1

Given a natural number n, print all distinct divisors of it. Examples : Input : n = 10 Output: 1 2 5 10 Input: n… Read More »

## Euler’s Totient Function

Euler’s Totient function ?(n) for an input n is count of numbers in {1, 2, 3, …, n} that are relatively prime to n, i.e.,… Read More »