How many words can a pen with half refill write?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

If 21x = 79x, what is the value of x?

Which Burger Is Different in below image?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

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

Solve below popular number sequence
314 159 265 358 979 323 846 ?

Fate has decided that you will only be pleased to meet me when you need me

Maybe that is why, when I am working, I start working

However annoying I may be to the regulars, the little ones are always inspired

I will always be waiting if you try to reach me

How many of you can guess my name, let me see