What's the only room from which no one can enter or leave

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

By what process could you make a 'Tea-Table' into food?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

What does a man do only once in his lifetime, but women do once a year after they are 29?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

What 5-letter word typed in all capital letters can be read the same upside down?

On the occasion of Diwali, online seller companies in India are offering a big discount on Iphone14 as below.

: Flipkart offers a Flat 65% discount
: Amazon offers a 10% discount over and over again.
: Shopclues offers RS.45,000 off.

If the original cost of the iPhone is Rs.70,000 Which is the best offer for you?

Why do Chinese men eat more rice than Japanese men do ?