using numbers 1 and four 7's create #100, you can also use math. operations can this be done?

Question

Using the numbers 1,7,7,7,7 create the number 100.
as well as the five numerals you can use the ususal mathematical operations- addition, subtraction division, multiplication and parenthesese. For example (7+1) x (7+7)= 112 but not right becasue it is not 100. Can this be done? This is a 4th grade math problem!

Answer 1

If you can combine digits, 177 - 77 is your answer.

In the question, it says we can also use math. So there is a way other than math. I suppose this is the one:

Write 100 on paper. make the zero's look like rectangles. Each rectangle is made of two 7's.

Answer 2

From a historic point of view the subject is finding information to assist a linear direction for the form of arithmetic, Math is a scientific description of organic principals. the classic Greeks confirmed the same rationalization to the only you have given,yet with actuality that became no longer the inspiration of Math, it became an attempt to describe it. The principals we come across defined by way of math are obeyed by way of organic techniques, neither math or the principals are preternatural. Math has replace into extra or much less subtle at diverse factors in historic previous, it even with the undeniable fact that keeps to be a equipment of description, no longer an invention. it truly is a skill that discovers organic actual regulations, or principals that are actually not self obvious. you haven't any longer shown how math became created, you have offered a postulate, that can neither be supported or proved on a greater scale. X G-d out in case you prefer to! study and make water tight argumants in case you like others to persist with you, Your argument is as emotional and unscientific as Fireball's.

Answer 3

the best i came up with is 99...

[1/7 + 7]+7] x 7 = 99,

i thought you had to use algebra, if you can do combining, he's ^ right, 177-77....