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?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

Rose, Lily and Jasmine decided to buy flowers for their moms on Mother's Day. One of them bought lilies, the other roses, and the third one jasmines.
'It's funny!' said the girl with roses, 'we bought roses, jasmines and lilies, but none of us bought the flowers matching her name'.
'You're right!', said Lily.
What kind of flowers did each of the girls buy?

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

Can you name four days which start with the letter 'T'?

Find the Next Number in the Sequence

2 9 3 1 8 4 3 6 5 7 ?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

What runs around the whole yard without moving?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?