How many triangles can you find in this given picture?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What breaks yet never falls, and what falls yet never breaks?

If six children and two dogs were under an umbrella, how come none of them got wet?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?