Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Which holiday are we talking about?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

In a town, there are four houses located at different distances from each other. Following are the distances:

The third house is 60 meters apart from the first house.
The fourth house is 40 meters apart from the second house.
The third house is 10 meters nearer to the fourth house than it is to the second house.

Can you find out the distance between the fourth and the first house?

What do you see here? Your task is to find three words hidden in the optical illusion

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?