Topic Details (Notes format)

How to Convert Between Different Number Bases

Subject: Mathematics

Book: Maths Mastery

Number systems like binary (base 2), octal (base 8), and hexadecimal (base 16) appear in computing, while decimal is base 10. To convert a decimal integer to binary, repeatedly divide by 2, gathering remainders. For example, 13 in binary is 1101. Reversely, sum place values 1×2³+1×2²+0×2¹+1×2⁰=8+4+0+1=13. Conversions among bases are vital in digital electronics, programming (memory addresses), or cryptographic systems. Mastering them fosters agility with computational tasks and fosters deeper understanding of how digital systems store and process numbers.

Practice Questions

What is the value of x if 3x + 7 = 16?

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What is the HCF of 72 and 120?

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The simple interest on Rs. 4000 at 5% per annum for 2 years is:

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What is the sum of the first 10 positive even numbers?

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A sum triples in 20 years at simple interest. What is the rate of interest per annum?

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The LCM of two numbers is 60, and their HCF is 5. If one of the numbers is 20, what is the other number?

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How many diagonals does a pentagon have?

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If x^3 - 3x^2 + 4 = 0, what is one root of the equation?

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If the cost price of an item is Rs. 400 and the selling price is Rs. 500, what is the profit percentage?

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The probability of getting an even number when rolling a die is:

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