12
6 new balls at each change over.
no they have 4
2m + 6
6 Balls Are bowled an over but if there is a no ball (either whole foot is infront of the line, if it is over the head), a dead ball (Bounces twice) or a wide (Professional game only) counts as a re-Bowl.
6
10.Twice of 3 or 3x2= 64 more than 6 or 4+6 = 10
It is 2n + 6
2m + 6
72
If there are no extras, then only 30 balls will be bowled. If there are extras, more balls will be bowled depending on the number of extras.
6
n = number.2n + 6=====