Count the number of triangles in the below picture?

What number should come in place of the question mark below?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

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.'

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

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?

Can you replace the question mark with the correct number?

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

What has 88 keys?

By using 'because' continuously three times, can you make an English statement ?