Replace the question mark with the correct number.

Find the missing letter in the last circle logically in the given below picture.

A thief is convicted in Mexico. He gets the death penalty. The judge allows him to say the last sentence to determine how the penalty will be carried out. If the thief lies, he will be hanged, if he speaks the truth he will be beheaded. The thief tells the last sentence and to everybody's surprise some minutes later he is set free because the judge cannot determine his penalty. What did the thief say?

What is the next number in this matchsticks series riddle?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

A sundial has the fewest moving parts of any timepiece. Which has the most?

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

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

What does the below image rebus riddle means ?

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?