what's the probability of getting a king or a queen from a pack of 52 cards?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

I have Rs.50 and I spend it in the way as below.

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

Why are televisions attracted to people?

The more you take me, the more you leave me behind.
Who Am I?

Do you know who was buried in John's tomb?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking

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?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?