Decode this picture on T-Shirt and tell what it says ?

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

What does this rebus mean?

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In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.

A mathematics teacher took exams for his students. Out of the total students, 25% passed both the tests included in the exam. However, only 42% were able to clear the first test.

Can you find out the percentage of those students who passed the first test and also passed the second test?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

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?