What does this mathematical rebus means ?

You need to arrange three 7 and mathematical symbols to form number 1?

How many triangles are there on the puzzle below?

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?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

What is next number in the pattern below:

131 517 192 123 ?

Can you find the six hidden animals in the picture below?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

It is a 5 letter word if you take away first letter it is something you get from sun, if you remove second letter you will get something to eat, if you remove third letter you get a word you use in pointing at and if you remove the fourth letter you get something to drink. What is it?