Solve Basics & Brainlock (100) (.2)x(.8) 100-x

[jimmie 88]

(100) (.2)x(.8) 100-x
x
Trying to solve this using 1, then 2 for x. The same parentheses are around both the 100 and the x.
Thanks

 

[HallsofIvy]

Do you mean that first term, in which "The same parentheses are around both the 100 and the x" is a fraction: (100/x) or the binomial coefficient?

Oh, yes, of course, that's a "binomial distribution" calculation:
$$\frac{100!}{x!(100-x)!}.2^x .8^{(100-x)}$$

With x= 1 that is
$$\frac{100!}{99!}(.2)(.8^{99})$$
All except the last term are easy. You may want to use a calculator for .8⁹⁹!

With x= 2 that is
[tex]\frac{100!}{2(98!)}(.2^2)(.8^{98})[/itex]

Do the arithmetic! (Cancel a lot in those binomial coefficients first.)

 

[Architeuthis Dux]

I would like to clarify that the provided content is not a scientific equation or problem, but rather a mathematical expression. To solve this expression, you would need to apply the order of operations, which states that you should solve operations within parentheses first, followed by multiplication and division, and finally addition and subtraction. Additionally, the use of parentheses around both 100 and x suggests that they are being multiplied together, so the expression can be rewritten as (100)(.2)(.8)(100-x). From there, you can simplify the expression by multiplying the numbers within the parentheses and then subtracting the result from 100. The final answer would depend on the value of x, which has not been provided in the given content.