Question

5. Find the greatest number which completely divides 120, 160 and 180.
6. Four bells ring with intervals of 6, 9, 12 and 15 seconds respectively. All the four bells ring together
at 3:00 pm. At what earliest time will they ring together again?
the differ
tween the greatest 6-di
tha leasi​

Answer 1

Answer:

ans5. greatest no. is 20. ans6. 3:03

Answer 2

Answer:

Ans5. The greatest number is 360

Ans6. The will ring together again after 3 hours

means 6:00 PM

step by step explanation of ans5

First find the L.C.M of 120,160&180

So,2×2×2×3×3×5=360

Step by step explanation of Ans6

Find the L.C.M of 6,9,12&15

=2×3×3×2×5

=180Min

So,180min÷60min

=3hours

=3:00+3hours

=6 hours