- A14
- B12
- C26
- D13
Step-by-Step Solution
For co-prime numbers HCF is 1, so LCM = product of the numbers. Other number = 117 / 9 = 13. (9 and 13 are indeed co-prime.)
Answer: D) 13
The LCM of two co-prime numbers is 117.
One of the numbers is 9. What is the other number?
Class 6HCF and LCMPlaying with Numbers
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All HCF and LCM practice questions
More Class 6 HCF and LCM practice
Three bells in a school ring at intervals of 9, 12 and 15 minutes. They all ring…The factor tree shows 84. Also, 60 = 2 × 2 × 3 × 5 . Using the prime factors, what is…A hall floor in Lucknow is drawn on the grid. It must be covered with identical square…The timelines show when two temple bells ring, starting together at 9:00 am. Each bell…The Venn diagram sorts the prime factors of 36 and 60. The common primes are in the…