Question

1. Find the LCM of 105, 175 and 140.
2. Find the least number which when divided by 70,140 and 350 leaves the remainder 7 in
each case.
3. Four bells ring at intervals of 8, 12, 16 and 20 minutes, respectively. All four rang
together at 11 a.m. When will they next ring together?​

Answer 1

Answer:

1)2100

2)7

3)1pm

Step-by-step explanation:

1)175=5^2×7

105=3×5×7

140=2^2×5×7

>LCM=5^2×2^2×3×7

=2100

Answer 2

Answer:

ans3 - 12-1,2,3,4,6...............