Topic Details (Notes format)

How to Work with Exponents (Laws of Exponents)

Subject: Mathematics

Book: Maths Mastery

Exponents, or powers, indicate repeated multiplication of a base number. Key laws include Product of Powers (a^m × a^n = a^(m+n)) and Power of a Power ((a^m)^n = a^(m×n)). For example, 2² × 2³ = 2^(2+3) = 2^5 = 32. Negative exponents a^–n represent 1/(a^n). Mastering exponents is vital in scientific notation, compound interest, and growth/decay problems. By consistently applying exponent laws, you can simplify expressions, solve exponential equations, and interpret phenomena like population growth or radioactive decay with ease.

Practice Questions

If a:b = 3:4 and b:c = 5:6, what is a:c?

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What is the probability of drawing an ace from a standard deck of 52 cards?

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What is the 7th term of the arithmetic progression 3, 6, 9, 12,...?

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If a+b = 10 and ab = 21, what is the value of a^3 + b^3?

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A cube has a side length of 4 cm. What is its volume?

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A triangle has angles 60°, 60°, and 60°. What type of triangle is it?

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If the sum of three consecutive integers is 96, what are the integers?

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A man spends 75% of his income and saves Rs. 600. What is his total income?

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If a:b = 5:7 and b:c = 6:11, what is a:c?

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If a square has a perimeter of 64 cm, what is its area?

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