It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

What occurs twice in a week, once in a year but never in a day?

Replace the question mark with the correct number below.

By what process could you make a 'Tea-Table' into food?

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

How could a baby fall out of a twenty-story building onto the ground and live?

Buy me, smell me or deliver me, I do not change.

Who am I?

Can you replace the question mark with the correct number in the below table sequence?