Solution:

He was a twin brother of one of Joseph's friends.

Solution:

1/2

one of two is the possibility
1. If any of the first 99 people sit in Abhishek seat, Abhishek will not get to sit in his own seat.
2. If any of the first 99 people sit in Aishwarya's seat, Abhishek will get to sit in his seat.

Solution:

A Spider

Solution:

Align the toothpicks to form TEN. Use one toothpick for each of the lines.

Solution:

Solution is below

Solution:

To do this, he must be pushing the cork inside the bottle and then taking out the coin.

Solution:

2003.

Explanation:
Its a series of prime numbes.

Solution:

Pages 19, 20, 23, 37, 38, & 42 will also be missing

Solution:

Set the first switches on for abt 10min, and then switch on the second switch and then enter the room.
Three cases are possible
1.Bulb is on => second switch is the ans
2.Bulb is off and on touching bulb , you will find bulb to be warm
=>1st switch is the ans.
3.Bulb is off and on touching second bulb , you will find bulb to be normal(not warm)
=>3rd bulb is the ans.

Solution:

The probability of two numbers being relatively prime is 60%. Thus if you keep playing the bet, you will hypothetically make 20 cents on every play.

Thus, you should accept the bet.

Solution:

The mules is moving in circular path and hence outside legs travels more distance than inner legs.