Replace the question mark with the correct number.

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

What word is pronounced the same if you take away four of its five letters?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

Find out the number of circles in the given picture having Illusion

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

How is a fly different from a mosquito?

What happened when the wheel was invented?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?