The task is to generate the correct answer for a given math problem.

Problem: the diameter of the driving wheel of a bus in 140 cm . how many revolutions per minute must the wheel make in order to keep a speed of 33 kmph ?
125

Problem: how many zeroes are there at the end of the number n , if n = 70 ! + 140 ! ?
16

Problem: if log 4 x + log 4 ( 1 / 6 ) = 1 / 2 then the value of x is ?

12