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Algebra

Linear and quadratic equations, polynomials, arithmetic progressions

Sample Practice Questions

  1. A number is increased by 20% and then decreased by 20%. The net change is:

    • No change
    • 4% increase
    • 4% decrease
    • 2% decrease
    Show answer

    Answer: 4% decrease

  2. An arithmetic progression has first term 3 and common difference 4. The 10th term is:

    • 35
    • 39
    • 43
    • 40
    Show answer

    Answer: 39

  3. The nth term of a GP with first term a and ratio r is:

    • ar^n
    • ar^(n−1)
    • a + (n−1)r
    • a(n−1)r
    Show answer

    Answer: ar^(n−1)

  4. If log₁₀ 100 = x, then x =

    • 1
    • 2
    • 10
    • 100
    Show answer

    Answer: 2

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Practice Questions

Practice 20 randomly selected NTSE questions on Algebra. Answers are revealed after each question.

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SAT Topics