1 files changed, 10 insertions, 0 deletions
diff --git a/progs/a849.py b/progs/a849.py
new file mode 100644
index 0000000..b35a0d0
--- /dev/null
+++ b/progs/a849.py
@@ -0,0 +1,10 @@
+def nCr(n, r): 
+	if (r > n / 2): 
+		r = n - r 
+	answer = 1 
+	for i in range(1, r + 1): 
+		answer *= (n - r + i) 
+		answer /= i 
+	return answer 
+def binomial_probability(n, k, p): 
+	return (nCr(n, k) * pow(p, k) *	pow(1 - p, n - k)) 
+\ No newline at end of file