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Mathematics Past Questions

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4,407 questions JAMB 2359 WAEC 1853 NECO 179 POST_UTME 6 CUSTOM 10

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4,407 questions

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Question 1671

jamb 1994

\(\begin{array}{c|c} \oplus mod 10 & 2 & 4 & 6 & 8 \\ \hline 2 & 4 & 8 & 2 & 6 \\4 & 8 & 6 & 4 & 2\\ 4 & 8 & 6 & 4 & 2\\ 6 & 2 & 4 & 6 & 8\\ 8 & 6 & 2 & 8 & 4\end{array}\)
The multiplication table above has modulo 10 on the set S = (2, 4, 6, 8). Find the inverse of 2

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Question 1672

jamb 1994

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?

Aclosure

Bidentity

Cpositive

Dinverse

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Question 1673

jamb 1994

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\(\frac{(n + 1)(n + 2)}{2}\)

Dn(2n + 1)

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Question 1674

jamb 1994

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

A10^-1

B10^o

C10

D10²

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Question 1675

jamb 1994

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

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Question 1676

jamb 1994

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

Ax < \(\frac{1}{2}\)

Bx < 0 or x < \(\frac{1}{2}\)

C0 < x < \(\frac{1}{2}\)

D1 < x < 2

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Question 1677

jamb 1994

Find P if \(\frac{x - 3}{(1 - x)(x + 2)}\) = \(\frac{p}{1 - x}\) + \(\frac{Q}{x + 2}\)

A\(\frac{-2}{3}\)

B\(\frac{-5}{3}\)

C\(\frac{5}{3}\)

D\(\frac{2}{3}\)

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Question 1678

jamb 1994

Solve for r in the following equation \(\frac{1}{r - 1}\) + \(\frac{2}{r + 1}\) = \(\frac{3}{r}\)

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Question 1679

jamb 1994

If a = 1, b = 3, solve for x in the equation \(\frac{a}{a - x}\) = \(\frac{b}{x - b}\)

A\(\frac{4}{3}\)

B\(\frac{2}{3}\)

C\(\frac{3}{2}\)

D\(\frac{3}{4}\)

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Question 1680

jamb 1994

Find the values of p and q such that (x - 1)and (x - 3) are factors of px3 + qx2 + 11x - 6

A-1, -6

B1, -6

C1, 6

D6, -1

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Question 1681

jamb 1994

Factorize a2x - b2y - b2x + a2y

A(a - b)(x + y)

B(y - x)(a - b)(a + b)

C(x - y)(a - b)(a + b)

D(x + y)(a - b)(a + b)

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Question 1682

jamb 1994

Simplify \(\frac{(2m - u)^2 - (m - 2u)^2}{5m^2 - 5u^2}\)

A\(\frac{3}{5}\)

B\(\frac{2}{5}\)

C\(\frac{2m - u}{5m + u}\)

D\(\frac{m - 2u}{m + 5u}\)

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Question 1683

jamb 1994

Given that for sets A and B, in a universal set E, A \(\subseteq\) B then A \(\cap\)(A \(\cap\) B)' is

B\(\phi\)

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Question 1684

jamb 1994

Given that \(\sqrt{2} = 1.414\), find without using tables, the value of \(\frac{1}{\sqrt{2}}\)

A0.141

B0.301

C0.667

D0.707

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Question 1685

jamb 1994

Simplify \(\sqrt{48}\) - \(\frac{9}{\sqrt{3}}\) + \(\sqrt{75}\)

A5√3

B6√3

C8√3

D18√3

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Question 1686

jamb 1994

Without using table, solve the equation 8x^-2 = \(\frac{2}{25}\)

D10

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Question 1687

jamb 1994

Evaluate \(\frac{log_5 (0.04)}{log_3 18 - log_3 2}\)

B-1

C\(\frac{2}{3}\)

D-\(\frac{2}{3}\)

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Question 1688

jamb 1994

Evaluate \(\frac{0.36 \times 5.4 \times 0.63}{4.2 \times 9.0 \times 2.4}\)

A0.013

B0.014

C0.14

D0.13

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Question 1689

jamb 1994

Evaluate \(\frac{1}{3} \div [\frac{5}{7}(\frac{9}{10} -1 + \frac{3}{4})]\)

A\(\frac{28}{39}\)

B\(\frac{13}{39}\)

C\(\frac{39}{28}\)

D\(\frac{84}{13}\)

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Question 1690

jamb 1994

The mean of twelve positive numbers is 3. When another number is added, the mean becomes 5. Find the thirteenth number

A29

B26

C25

D24

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