Exams › SSC CGL (Prelims) › General

Find the LCM of 15, 20 and 24.

1. 120
2. 240
3. 60
4. 180

Correct answer: 120

Solution

The prime factors are 15 = 3 × 5, 20 = 2^2 × 5, and 24 = 2^3 × 3. Taking the highest powers gives 2^3 × 3 × 5 = 120.

Related SSC CGL (Prelims) General questions

• If $4 \oplus 3 = 19$ and $5 \oplus 2 = 17$, then $6 \oplus 4 = ?$
• Find the odd one out.
• What is the average of all integers between 200 and 350 that are exactly divisible by 11?
• If \(\frac{9}{11}=A\) and \(\frac{3}{7}=B\), then find the value of \(A-B\).
• If $4 @ 2 = 12$ and $6 @ 3 = 27$, then what is the value of $8 @ 4$?
• Suppose $p = \sqrt{3} + \sqrt{7}$, $q = \sqrt{8} + \sqrt{2}$, and $r = 2\sqrt{3} + 2$. Which of the following is true?

⚔️ Practice SSC CGL (Prelims) General free + battle 1v1 →