Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

Find the Goldfish below the given Image.

A few friends are enjoying their sea voyage in a boat full of apples. On the way, they felt hungry and thus decided to eat the apples. Together, they ate two dozen of apples. When they have eaten the apples, will there be any change in the water level?

While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

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?

Why do people go to bed?

What does this mathematical rebus means ?

I am an odd number. Take away a letter and I become even. What number am I?