Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Imagine you are in a room with no windows or doors. How will you get out?

Count the number of triangles in the given picture.

2, 3, 5, 9, 17, _ What is the next number in the sequence?

Which is the smallest number that you can write using all the vowels exactly once?

Jack was having a candle light dinner with his girlfriend. Suddenly a cold gush of wind entered through the open window and three of the ten candles were extinguished. Assuming that none of the other candles were extinguished.

How many candles are they left with in the end ?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

How many letters are in the alphabet?

Five thieves looted a bank and they ran away in a car. The bank staff informed the police and they began the search of their car in their jeep. They found them on a road and chased them eventually catching them. The light that is used to fill the number plate was broken on the thieves' car. Also, the headlights of the jeep police were not working. How were the police able to catch the thieves then?