What question can you never answer yes to?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

What is the next number in the series?

15 29 56 108 208 ?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

I am working in a bus company. The company recently went under expansion and therefore there was not enough room for all the buses. As a result, twelve buses had to be stored outside.

If the company decides to expand the garage space by forty percent, enough space to accommodate the current buses will be created leaving enough space for twelve more buses if the need arises in future.

Can you calculate the number of buses that the company owns at present?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Our product and our sum always give the same answer. Who are we?

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