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

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?

What is the coolest letter in the alphabet?

Which city is three-fifths chick two third cat and 50% goat?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

I look at you, you look at me, I raise my right, you raise your left. What am I?

People make me, save me, change me, raise me. What am I?

What does below pictogram mean?