What begins with T, ends with T, and has T in it?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Can you place three balls such that the equation shown in the picture holds true?

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

Can you find the key in the picture below?

Joseph buys three kinds of chocolates for 100 rupees. The first one is priced at 5 rupees, second one at 3 rupees and third one at 0.5 rupees.

If he bought 100 chocolates in total, how many pieces do you think he bought each chocolate?

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

What does this rebus mean?

O
N
C
E
TIME

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.