Revert "Answering all the questions"

This reverts commit 3dc3b9f.

Author: SaraTahir28

number-systems/README.md

@@ -6,75 +6,60 @@ The goal of these exercises is for you to gain an intuition for binary numbers.
 
 Convert the decimal number 14 to binary.
 Answer:
-1110
 
 Convert the binary number 101101 to decimal:
 Answer:
-45
 
 Which is larger: 1000 or 0111?
 Answer:
-1000 > 0111 as 1000 represents 8 and 0111 is 7.
 
 Which is larger: 00100 or 01011?
 Answer:
-01011 > 00100
 
 What is 10101 + 01010?
 Answer:
-11111
 
 What is 10001 + 10001?
 Answer:
-1 00010 (carrying out 1)
 
 What's the largest number you can store with 4 bits, if you want to be able to represent the number 0?
 Answer:
-1111 in Binary and 15 in Decimal 
 
 How many bits would you need in order to store the numbers between 0 and 255 inclusive?
 Answer:
-8 bits
+
+How many bits would you need in order to store the numbers between 0 and 3 inclusive?
+Answer:
 
 How many bits would you need in order to store the numbers between 0 and 1000 inclusive?
 Answer:
-2 bits
 
 How can you test if a binary number is a power of two (e.g. 1, 2, 4, 8, 16, ...)?
 Answer:
-Every binary number is made from sums of powers of 2, but a number is a power of 2 itself if its binary representation has exactly one "1" and all the other bits are 0.
 
 Convert the decimal number 14 to hex.
-Answer: 0xE
+Answer:
 
 Convert the decimal number 386 to hex.
 Answer:
-182
 
 Convert the hex number 386 to decimal.
 Answer:
-902
 
 Convert the hex number B to decimal.
 Answer:
-11
 
 If reading the byte 0x21 as a number, what decimal number would it mean?
 Answer:
-33
 
 If reading the byte 0x21 as an ASCII character, what character would it mean?
 Answer:
-! - exclamation mark
 
 If reading the byte 0x21 as a greyscale colour, as described in "Approaches for Representing Colors and Images", what colour would it mean?
 Answer:
-A very Dark shade of Grey.
 
 If reading the bytes 0xAA00FF as an RGB colour, as described in "Approaches for Representing Colors and Images", what colour would it mean?
 Answer:
-A bright purple ( Red=170 Strong Red, Green is 0 and Blue =255 is maximum value for Blue so Blue and Red make purple)
 
 If reading the bytes 0xAA00FF as a sequence of three one-byte decimal numbers, what decimal numbers would they be?
 Answer:
-170,0,255