If the LCM of two numbers is 2079 and their HCF is 27 and if one of the numbers is 189, then find the other number.

Given:
LCM = 2079

HCF = 27

One number = 189
Formula used:
​$$\text{HCF} \times \text{LCM} = \text{Product of the two numbers} \\27 \times 2079 = 189 \times x$$​​
Solution:
​$$27 \times 2079 = 56133 \\189x = 56133 \\x = \frac{56133}{189} = 297$$​​
Therefore, the other number is  297.
Correct answer is (a) 297.​​