Mathematics JAMB Past Questions

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821

Find the range of values of x for which \(\frac{1}{x}\) > 2 is true

A. x < \(\frac{1}{2}\)
B. x < 0 or x < \(\frac{1}{2}\)
C. 0 < x < \(\frac{1}{2}\)
D. 1 < x < 2

View Answer & Discuss JAMB 1994

822

If the 6th term of an arithmetic progression is 11 and the first term is 1, find the common difference.

A. \(\frac{12}{5}\)
B. \(\frac{5}{3}\)
C. -2
D. 2

View Answer & Discuss JAMB 1994

823

Find the value of log₁₀ r + log₁₀ r² + log₁₀ r⁴ + log₁₀ r⁸ + log₁₀ r¹⁶ + log₁₀ r³² = 63

A. 10^-1
B. 10^o
C. 10
D. 10²

View Answer & Discuss (1) JAMB 1994

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824

Find the nth term of the sequence 3, 6, 10, 15, 21.....

A. \(\frac{n(n - 1)}{2}\)
B. \(\frac{n(n + 1)}{2}\)
C. \(\frac{(n + 1)(n + 2)}{2}\)
D. n(2n + 1)

View Answer & Discuss (4) JAMB 1994

825

A binary operation \(\oplus\) is defines on the set of all positive integers by a \(\oplus\) b = ab for all positive integers a, b. Which of the following properties does NOT hold?

A. closure
B. identity
C. positive
D. inverse

View Answer & Discuss (3) JAMB 1994

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