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?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

Can you count the number of matches in the picture below ?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

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

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)