I’m tall when I’m young, and I’m short when I’m old. What am I?

Why is it very easy to weigh a fish?

Why did the Girl throw the butter out of the window?

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?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

There are seven sisters in a house in a village where there is no electricity or any gadget.

Sister-1: Reading Novel
Sister-2: Cooking
Sister-3: Playing Chess
Sister-4: Playing Sudoku
Sister-5: Washing clothes
Sister-6: Gardening

what is Sister-7 doing ?

Count the number of lines in the image below ?