diff --git a/e0021/euler0021.rkt b/e0021/euler0021.rkt
new file mode 100644
index 0000000..48ce1d9
--- /dev/null
+++ b/e0021/euler0021.rkt
@@ -0,0 +1 @@
+#lang typed/racket
diff --git a/e0029/euler0029.rkt b/e0029/euler0029.rkt
new file mode 100644
index 0000000..6f1f7b4
--- /dev/null
+++ b/e0029/euler0029.rkt
@@ -0,0 +1 @@
+#lang racket