A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

My thunder comes before lightning.
My lightning comes before my rain.
My rain dries up all the land it touches.

Who am I?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

John was drowned by he was not wet. How?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145