Question

We have to find the least number which when multiplied by $10$ is exactly divisible by $24,15,12,25.$

• A. $55$
• B. $38$
• C. $45$
• D. $60$

Answer 1

The correct option is D $60$

Factors of
$24=2\times 2\times 2\times 3,15=3\times 5,12=2\times 2\times 3,25=5\times 5$
$LCM=2\times 2\times 2\times 3\times 5\times 5=600$
The least number required $=\frac{600}{10}=60$
Therefore$,$ $D$ is the correct answer.