Find the missing number in the sequence below:

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

What can jump higher than a building?

Why is a river so rich ?

What is always in front of you but can’t be seen?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?