I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

Can you count the number of quadrilaterals in the picture below?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

What can you see in the middle of March and April that you can never see in any other month?

The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?

John is found dead in his office at his desk. The police have narrowed the suspects down to three people: Mrs. Jacob, John’s wife Hena and his business partner Jason . All three visited John on the day of his murder, but all three provide the police with stories of explanation as to the reason for their visit.
Police found John with his wrist watch still on his right arm, a torn up picture of his wife laying on the floor beside the trash can, and an ink pen in his right hand. On the desk, the police found a name plate, a telephone that was off the hook, and a personal calendar turned to the July 5th page with 7B91011 written on it. After examining this evidence, the police knew their suspect. Who was it ?

Which is faster, Heat or Cold ? Explain.