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Introduction to Exponents Video Lecture | Mathematics Olympiad Class 7

24 videos|51 docs|112 tests

FAQs on Introduction to Exponents Video Lecture - Mathematics Olympiad Class 7

1. What is an exponent?
Ans. An exponent is a mathematical notation that indicates the number of times a base number is multiplied by itself. It is represented as a small superscript number placed to the right of the base number.
2. How do exponents work?
Ans. Exponents work by multiplying the base number by itself as many times as indicated by the exponent. For example, if the base number is 2 and the exponent is 3, then the exponentiation would be 2 * 2 * 2 = 8.
3. What is the meaning of a positive exponent?
Ans. A positive exponent indicates that the base number should be multiplied by itself for the number of times specified by the exponent. For example, 2^3 means 2 * 2 * 2, which equals 8.
4. What does a negative exponent represent?
Ans. A negative exponent represents the reciprocal of the base number raised to the positive value of the exponent. For example, 2^-3 is equivalent to 1 / (2^3), which simplifies to 1 / (2 * 2 * 2) = 1/8.
5. How do exponents relate to repeated multiplication?
Ans. Exponents are a convenient way to express repeated multiplication. For example, 2^3 is a shorthand notation for 2 * 2 * 2. It allows us to write and calculate large numbers more easily by avoiding repetitive multiplication.
24 videos|51 docs|112 tests

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