An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Where do you go to learn how to make ice cream?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

Which is faster, Heat or Cold ? Explain.

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.