Can you place three balls such that the equation shown in the picture holds true?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

What is the word or phrase below?
R | E | A | D

As shown in the image, the nine Dogs are square fenced. By constructing just two square fences can you make sure that two Dogs cannot meet each other without crossing the fence?

Name a key which is hardest to turn.

I have Rs.50 and I spend it in the way as below.

What has to be broken before you can use it?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

Which is Odd One Out and why?

4377

3954

9862

8454

9831