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

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

I am eight letters long - "12345678"
My 1234 is an atmospheric condition.
My 34567 supports a plant.
My 4567 is too appropriate.
My 45 is a friendly thank-you.
My 678 is a man's name.

What word am I?

How many Watermelons are there in the below picture?

Count the number of triangles in the picture below:

You see me once in June, twice in November, and not at all in May. What am I?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

I have branches, but no fruit, trunk or leaves. What am I?