From 08208bfb53f202c9632bbdb3758e3308f3e54708 Mon Sep 17 00:00:00 2001 From: XiaoQuark Date: Sat, 11 Jul 2026 08:06:20 +0100 Subject: [PATCH 1/2] task: answer number-systems questions --- number-systems/Part-1.md | 32 ++++++++++++++++---------------- number-systems/Part-2.md | 10 +++++----- 2 files changed, 21 insertions(+), 21 deletions(-) diff --git a/number-systems/Part-1.md b/number-systems/Part-1.md index d8f9c290e..a7b7f92b8 100644 --- a/number-systems/Part-1.md +++ b/number-systems/Part-1.md @@ -7,48 +7,48 @@ The goal of these exercises is for you to gain an intuition for binary numbers. The answers to these questions should be a number, either in binary, hex, or decimal. Q1: Convert the decimal number 14 to binary. -Answer: +Answer: 1110 Q2: Convert the binary number 101101 to decimal: -Answer: +Answer: 45 Q3: Which is larger: 1000 or 0111? -Answer: +Answer: 1000 Q4: Which is larger: 00100 or 01011? -Answer: +Answer: 01011 Q5: What is 10101 + 01010? -Answer: +Answer: 11111 Q6: What is 10001 + 10001? -Answer: +Answer: 100010 Q7: What's the largest number you can store with 4 bits, if you want to be able to represent the number 0? -Answer: +Answer: 1111 Q8: How many bits would you need in order to store the numbers between 0 and 255 inclusive? -Answer: +Answer: 8 Q9: How many bits would you need in order to store the numbers between 0 and 3 inclusive? -Answer: +Answer: 2 Q10: How many bits would you need in order to store the numbers between 0 and 1000 inclusive? -Answer: +Answer: 10 Q11: Convert the decimal number 14 to hex. -Answer: - +Answer: E + Q12: Convert the decimal number 386 to hex. -Answer: +Answer: 182 Q13: Convert the hex number 386 to decimal. -Answer: +Answer: 902 Q14: Convert the hex number B to decimal. -Answer: +Answer: 11 Q15: If reading the byte 0x21 as a number, what decimal number would it mean? -Answer: +Answer: 33 Q16: Continues in Part-2 diff --git a/number-systems/Part-2.md b/number-systems/Part-2.md index 68b0933d9..a0b984879 100644 --- a/number-systems/Part-2.md +++ b/number-systems/Part-2.md @@ -7,16 +7,16 @@ The goal of these exercises is for you to gain an intuition for binary numbers. The answers to these questions will require a bit of explanation, not just a simple answer. Q16: How can you test if a binary number is a power of two (e.g. 1, 2, 4, 8, 16, ...)? -Answer: +Answer: if the number contains only one 1 bit, and all other bits are 0 Q17: If reading the byte 0x21 as an ASCII character, what character would it mean? -Answer: +Answer: ! Q18: If reading the byte 0x21 as a greyscale colour, as described in "Approaches for Representing Colors and Images", what colour would it mean? -Answer: +Answer: A very dark grey Q19: If reading the bytes 0xAA00FF as a sequence of three one-byte decimal numbers, what decimal numbers would they be? -Answer: +Answer: 170 0 255 Q20: If reading the bytes 0xAA00FF as an RGB colour, as described in "Approaches for Representing Colors and Images", what colour would it mean? -Answer: +Answer: A blue toned purple From 9030c4c7e1916a66e81f865e245d33de98274c9d Mon Sep 17 00:00:00 2001 From: XiaoQuark Date: Fri, 24 Jul 2026 10:41:07 +0100 Subject: [PATCH 2/2] fix: incorrect answer to Q7 --- number-systems/Part-1.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/number-systems/Part-1.md b/number-systems/Part-1.md index a7b7f92b8..a2d4ef1bc 100644 --- a/number-systems/Part-1.md +++ b/number-systems/Part-1.md @@ -25,7 +25,7 @@ Q6: What is 10001 + 10001? Answer: 100010 Q7: What's the largest number you can store with 4 bits, if you want to be able to represent the number 0? -Answer: 1111 +Answer: 15 Q8: How many bits would you need in order to store the numbers between 0 and 255 inclusive? Answer: 8