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Question

The HCF and LCM of two numbers p and q are 44 and 4620 respectively. When p is divided by 55, the quotient is 4 and remainder is 0. What is the value of q ?

This question was previously asked in
CDS 2 2026 Maths Question Paper (13-Sep-2026)
The correct answer is

924

Determine the Value of Number p

We are given that when number p is divided by 55, the quotient is 4 and the remainder is 0.

Using the division algorithm, dividend = divisor × quotient + remainder, we can find p:

\(p = 55 \times 4 + 0\)

\(p = 220\)

Apply HCF and LCM Relationship

For any two positive integers, the product of the numbers is equal to the product of their Highest Common Factor (HCF) and Least Common Multiple (LCM).

The formula is: HCF(p, q) × LCM(p, q) = p × q

We are given:

  • HCF(p, q) = 44
  • LCM(p, q) = 4620
  • p = 220

Calculate the Value of Number q

Substitute the known values into the formula:

\(44 \times 4620 = 220 \times q\)

Now, solve for q:

\(q = \frac{44 \times 4620}{220}\)

To simplify, we can divide 44 by 220:

\(\frac{44}{220} = \frac{1}{5}\)

So the equation becomes:

\(q = \frac{1}{5} \times 4620\)

\(q = \frac{4620}{5}\)

\(q = 924\)

The calculated value for q is 924. Based on the provided options, the correct answer is Option C.

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Important Questions from LCM and HCF

  1. The HCF and LCM of two numbers are 12 and 72, respectively. If the ratio of the two numbers is 2 ∶ 3, then the larger of the two numbers is:

  2. Find the greatest number that will divide 43, 91 and 183 so as to leave the same remainder in each case.

  3. Joseph visits the club on every 5 th day, Harsh visits on every 24 th day, while Sumit visits on every 9 th day. If all three of them met at the club on a Sunday, then on which day will all three of them meet again?

  4. What is the least number which when divided by 12,20 and 24 leaves in each case a remainder of 8?

  5. Which of the following is a pair of co-primes?

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