Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

The LCM and HCF of two numbers 99 and 75 are in the ratio?

### Question 2

Which is the least number which must be added to 21937 so that it becomes divisible by 21, 95 and 77?

### Question 3

Which is the second smallest number, which, when divided by 12 and 60, leaves the remainder 7?

**A**

127.

**B**

67.

**C**

187.

**D**

53.

**Soln.**

**Ans: a**

The LCM of 12 and 60 = 60. All the numbers that leave remainder 7 upon being divided by either of the given two numbers are of the form 60k + 7. When k = 1, we get the smallest number, and k = 2 gives the next required number = 127.

### Question 4

Three lights are flashing at regular intervals. They, respectively, flash after 6, 12 and 18 seconds. How many times do they together flash in 864 seconds?

### Question 5

What is the HCF of $1{1/14}$, ${5/7}$ and ${3/4}$?

This Blog Post/Article "HCF and LCM Quiz Set 006" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2017-04-07.