What do you answer even though it never asks you questions?

How can you make number one disappear by adding something to it?

What does the below rebus puzzle mean?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

Two guards were guarding the camp.Guard-1 was looking towards the south to make sure no threat is coming from the road.Guard-2 was looking at the north to make sure no threat is coming from the top. Suddenly Guard-1 ask the Guard-2 why he is smiling?How Guard-1 knows that Guard-2 is smiling?

Decode below three cipher riddles:

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

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Jenifer and Jesica are having a conversation.

Jenifer: I am definitely not over 30.
Jesica: I am 28 and you are surely 5 years older to me at least.
Jenifer: No, you are at least 29.

You are told that both of them are lying throughout in the conversation. Can you find their respective ages?

On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"