Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.

Which Number is the odd one out?

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

What does this below rebus puzzle mean?

Can you count the number of triangles in the given figure?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

If 21x = 79x, what is the value of x?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

I am sometimes honest
Sometimes dishonest
I can be sweet and also bitter
I can hurt you real bad and
also make u smile and blush ☺️
What am I?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?