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

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

You can see three almost identical images below. Can you spot the odd one out from them?

Which digit occurred maximum times between the number 1 and 1000?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Before Mount Everest was discovered, what was the highest mountain in the world?

Identify The phrase in the picture.

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?