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..3a8b300 100644
--- a/questions.md
+++ b/questions.md
@@ -12,24 +12,28 @@ expression which uses only `a`, `b`, and bit operators.
 The answers to the first two questions are given.
 
 1. 01010101
-
 ~b
 
 2. 00000101
-
 ~a & ~b
 
 3. 00000001
+a >> 7 
 
 4. 10000000
+a << 3
 
 5. 01010000
+a & ~b
 
 6. 00001010
+~a & b
 
 7. 01010000
+a & ~b
 
 8. 10101011
+b | (a >> 7)
 
 ## Integer questions
 
@@ -40,8 +44,11 @@ talk with others.
 9. If `a` represents a positive integer, and `one = Bits(1, length=len(a))`, 
    give an expression equivalent to `-a`, but which does not use negation.
 
+~a + one
+
 10. It is extremely easy to double a binary number: just shift all the bits 
     to the left. (`a << 1` is twice `a`.) Explain why this trick works. 
+This trick works because every spot to the left is double of the right so moving everything will double the entire number
 
 11. Consider the following: 
    ```
@@ -55,16 +62,27 @@ talk with others.
    ```
    Apparently 100 + 100 = -56. What's going on here?
 
+the full 8-bit is equal to 256 so 200 mod 256 is the same as -56 mod 256
+
 12. What is the bit representation of negative zero? Explain your answer.
+zero is neither negative or positive, it is just the absence of a value so it would just be 00000000
 
 13. What's the largest integer that can be represented in a single byte? 
     Explain your reasoning.
+the largest integer that can be represented by a single byte is 127. 
+A byte is 8 bits, since the very left bit is positive with a 0, the highest representation would be 01111111 which is equal to 127
 
 14. What's the smallest integer that can be represented in a single byte? 
     Explain your reasoning.
+The smallest integer that can be represented by a single byte is -128.
+Similar to problem 13, to have the smallest integer we need the largest negative number which is only represented by the very left number.
+Therefore it would be 10000000 because we are not adding any positives to it.
 
 15. What's the largest integer that can be represented in `n` bits? 
     Explain your reasoning.
+The largest integer that can be represented in n bits is 2^(n-1) -1. Based on the example in 13 this pattern makes sense, 
+we have to do n-1 because the first number is negative and can not represent a positive integer. We also have to subtract 1
+because it is one less.
 
 ## Text questions