Question

Five bells begin to toll together at intervals of 9 s, 6 s, 4 s, 10 s and 8 s, respectively. How many times will they toll together in the span of one hour (excluding the toll at the start)?

Answer 1

Answer:

first find the LCM of 6,4,10 and 8 = 6=2×3 4=2×2 10=2×5 8=2×2×2 LCM =2×2×2×3×5=120 so ,they toll together after 120 seconds means 120/60=after2min