If one of the number is 117, then other number is :
Answer: (c) 221
The highest common factor of two numbers = 13
And least common multiple = 1989
One number 117
Product of two numbers = highest common factor of two numbers x least common multiples of two numbers
Then, 117 x second number = 13 x 1989
Second number = 1989 x 13 /117
= 17 x 13
So, the other number is 221.
Hence, the correct answer is option (c) 221.