diff --git a/chaeryeon823/BOJ_2775.py b/chaeryeon823/BOJ_2775.py
new file mode 100644
index 0000000..ab56727
--- /dev/null
+++ b/chaeryeon823/BOJ_2775.py
@@ -0,0 +1,13 @@
+T = int(input())
+for _ in range(T):
+    k = int(input())
+    n = int(input())
+    dp = [[0]*(n+1) for _ in range(k+1)]
+    for i in range(1, n+1):
+        dp[0][i] = i   
+
+    for i in range(1, k+1):
+        for j in range(1, n+1):
+            dp[i][j] = dp[i][j-1] + dp[i-1][j]
+
+    print(dp[k][n])