How can one talk without saying a single word?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

What is both possible and impossible at the same time?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

0 0 0 = 6
1 1 1 = 6
2 2 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6

You can use any mathematical symbols in the space provided to make all above algebraic expressions true.

What building has the most stories?

Using eight eights and addition only, can you make 1000?