Question

How you can get number 28 by using following numbers and operators

Numbers: 1, 5, 7 and 8.
Operators: +, -, * and /
You can use ( ) brackets as well.

Rules:-

You can use each number only once.
You can not use 1 and 5 as 15.
You have to use all of the above number mentioned (1,5,7 and 8)

Answer 1

Answer: (8-5+1)*7 = 28.

Answer 2

We can make 28 as follow as:

(7*5)-8+1 = 35-8+1

Hence It is 28

Answer 3

We can find 28 in this format :-

(5*7)+1-8 = 28