Q:

What is the speed of the train?
 I. The train crosses a signal pole in 13 sec.
 II. The train crosses a platform of length 250 m in 27 seconds.
 III. The train crosses another train running in the same direction in 32 seconds.

• 1
  I and II only
• 2
  I and III only
• 3
  II and III only
• 4
  Any two of the three
• 5
  None of these