Reshenie Primerov | Po Informatike Dlia 8 Klassa

Test your knowledge with these typical 8th-grade exam questions. A) 256 bytes B) 512 bytes C) 2 bytes Q2. What is the decimal value of the binary number 101021010 sub 2 ? Q3. For which of the following values of is the statement (X < 15) AND (X is even) TRUE? 🔑 Answer Key & Explanations

This guide covers the core topics typically studied in the 8th grade, including number systems, units of information, and basic boolean logic.

14 is both less than 15 and an even number. 13 is not even (Option A), and 16 is not less than 15 (Option C).

To convert bits to bytes, divide by 8 ( ). Options B and C are mathematically incorrect. Q2: 🟢 B) 10. . Options A and C do not match the calculation.

📌 Topic 1: Units of Information (Единицы измерения информации)

📌 Topic 2: Number Systems (Системы счисления)

A text file takes up 5 Kilobytes of memory. How many bits is this? Solution: Convert Kilobytes to bytes: Convert bytes to bits: 💡 Answer: 40,960 bits

Find the value of the logical expression (X > 5) AND NOT (X > 10) for Solution: Substitute into the expression: : This is True (1). : This is False (0). Apply the NOT operation: NOT FalseNOT False = True (1). Combine with AND: True AND TrueTrue AND True = True . 💡 Answer: True (Истина) 🎓 Practice Quiz