When can we add 2 to 11 and get 1 as the correct answer?

What brings you down but never up?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

In the given picture, in how many ways can you read the word "Tiger"?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

what does the below math rebus puzzle mean?