What has many keys but can’t open a single lock?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

Spot the cat in the picture below

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

You have two bottles of pills marked with labels A and B. The pills are identical. The doctor has asked you to take one A pill and one B pill daily. You cant take more or less than that.

While taking out the pills one day, you took out one pill from A and by mistake took out two from B. You have no idea which pill is which now.

You cant throw away the expensive pills. What will you do now?

Using eight eights and addition only, can you make 1000?

What is the next number in this matchsticks series riddle?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?