Arun is instructed to clap every time the count of the instructor reaches a multiple of 3. Varun is instructed to clap every time the count reaches a multiple of 7. They would clap at the same time when the count reaches ___

Multiples of 4

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Multiples of 10

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Multiples of 21

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

They can never clap at the same time

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C
Multiples of 21

For Arun and Varun to clap together, the count has to be a multiple of both 3 and 7.
Taking the LCM of 3 and 7 which is 21. So, they will clap together every time the count reaches a multiple of 21.

Suggest Corrections

Similar questions

Arun is instructed to clap every time the count of the instructor reaches a multiple of 3. Varun is instructed to clap every time the count reaches a multiple of 7. By the time when both of them clap simultaneously for the third time, how many times did Arun clap?

Q. Arun was instructed to clap every time the count of the instructor reaches a multiple of 3. How many times did he clap when the count reached 63

A man stands before a large wall at a distance of 50-0 m and claps his hands at regular intervals. Initially, the interval is large. He gradually reduces the interval and fixes it at a value when the echo of a clap merges with the next clap. If he has to clap 10 times during every 3 seconds, find the velocity of sound in air.

Join BYJU'S Learning Program

Arun is instructed to clap every time the count of the instructor reaches a multiple of 3. Varun is instructed to clap every time the count reaches a multiple of 7. They would clap at the same time when the count reaches ___

The correct option is C Multiples of 21 For Arun and Varun to clap together, the count has to be a multiple of both 3 and 7. Taking the LCM of 3 and 7 which is 21. So, they will clap together every time the count reaches a multiple of 21.

The correct option is C
Multiples of 21

For Arun and Varun to clap together, the count has to be a multiple of both 3 and 7.
Taking the LCM of 3 and 7 which is 21. So, they will clap together every time the count reaches a multiple of 21.