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?

Which is faster, Heat or Cold ? Explain.

What is at the end of a rainbow?

Which English verb becomes past tense just by rearranging the letters?

You can hear me, but you can't touch or see me.

What am I?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?