The bells begin tolling at the same time and continued to do at the interval of 21,28,30 seconds respectively. Then the bells will toll together again after

Question

The bells begin tolling at the same time and continued to do at the interval of 21,28,30 seconds respectively. Then the bells will toll together again after (A) 7 seconds (B) 630 seconds (C) 420 seconds (D) 1764 seconds

Tardigrade Admin · Accepted Answer

Correct answer is (c) 420 seconds

Q. The bells begin tolling at the same time and continued to do at the interval of 21,28,30 seconds respectively. Then the bells will toll together again after

7 seconds

630 seconds

420 seconds

1764 seconds

Correct answer is (c) 420 seconds

Q. The bells begin tolling at the same time and continued to do at the interval of $21, 28, 30$ seconds respectively. Then the bells will toll together again after