No paper .
No calculator .
Just your brain and a timer/stopper/wristwatch.
Start timer NOW.
Put your hands in your pockets and start reading:
Let A=160*35 & B=1400*4
DECIDE, WHICH IS BIGGER (3 CHOICES):
c. the same
After deciding upon your answer, take your hands out of your pockets and
-write down your answer
-and the time elapsed.