diff --git a/modules/10_cpp14/src/digit_separators.cpp b/modules/10_cpp14/src/digit_separators.cpp
index b3babbe..e3498ee 100644
--- a/modules/10_cpp14/src/digit_separators.cpp
+++ b/modules/10_cpp14/src/digit_separators.cpp
@@ -3,18 +3,20 @@
 namespace cpp14 {
 
 auto million() -> int {
-    // TODO: Return 1'000'000 using digit separators
-    return 0;
+    return 1'000'000;
 }
 
 auto mask() -> std::uint32_t {
-    // TODO: Return 0xFF00'00FF
-    return 0;
+    return 0xFF00'00FF;
 }
 
 auto bits_set() -> int {
-    // TODO: Return population count of mask()
-    return 0;
+    const auto m = mask();
+    auto count = 0;
+    for (auto i = 0; i < 32; i++) {
+        if (m & (1 << i)) ++count;
+    }
+    return count;
 }
 
 }  // namespace cpp14