Replace the question mark with the correct number.

2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

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

I can write cow in 13 letters.

Can You?

The answer I give is yes, but what I mean is no. What was the question?

Using eight eights and addition only, can you make 1000?

why number 8549176320 is one of a kind?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?