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  1. Prepare
  2. Tutorials
  3. 10 Days of Statistics
  4. Day 4: Binomial Distribution I

Day 4: Binomial Distribution I

Objective
In this challenge, we learn about binomial distributions. Check out the Tutorial tab for learning materials!

Task
The ratio of boys to girls for babies born in Russia is . If there is child born per birth, what proportion of Russian families with exactly children will have at least boys?

Write a program to compute the answer using the above parameters. Then print your result, rounded to a scale of decimal places (i.e., format).

Input Format

A single line containing the following values:

1.09 1

If you do not wish to read this information from stdin, you can hard-code it into your program.

Output Format

Print a single line denoting the answer, rounded to a scale of decimal places (i.e., format).