A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Before Mount Everest was discovered, what was the highest mountain in the world?

What kind of band never plays music?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

Which five letter word can be added at the end of below word to form a
valid word?

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You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

What common phrase is represented by the below lines

Easy going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Medium going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Tough going:
Weak, 'I can't do it, I'm staying!'
Tough, 'Let's get going.'

What is black when you buy it, red when you use it, and gray when you throw it away?

I make two people out of one. What am I?