diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..4a96c22
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+source .venv/bin/activate
\ No newline at end of file
diff --git a/questions.md b/questions.md
index 6a16806..5e39f22 100644
--- a/questions.md
+++ b/questions.md
@@ -21,16 +21,28 @@ The answers to the first two questions are given.
 
 3. 00000001
 
+~a >> 3
+
 4. 10000000
 
+a << 3
+
 5. 01010000
 
+a & ~b
+
 6. 00001010
 
+~a & b
+
 7. 01010000
 
+a & ~b
+
 8. 10101011
 
+b | (~a >> 3)
+
 ## Integer questions
 
 These questions are difficult! Try exploring ideas with `Bits`