I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

How could a baby fall out of a twenty-story building onto the ground and live?

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 current time can be represented by below textual rebus.

0
=========
B.Sc
LLB

Can you tell us the current time?

When it's bad luck to meet a black cat?

Two prisoners Jack and Jill are locked in a cell.
There is open window approx 40 feet above the ground of the cell.
They are never able to reach there.

Then they plan to escape by a tunnel and they start digging out.
After digging for more than 20 days, Jill comes with the different plan and they escaped.

what was the plan ?

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

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?