18. A series circuit has an array of light bulbs connected. One burns out. What will happen to the rest of
the bulbs?
*
Most will also burn out
Half will switch off and half will remain on
They will all remain on
They will all switch off

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).