ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 506:

• JAMB 2010

Find the sum to infinity of the following series. 0.5 + 0.05 + 0.005 + 0.0005 + .....

A. \(\frac{5}{8}\)
B. \(\frac{5}{7}\)
C. \(\frac{5}{11}\)
D. \(\frac{5}{9}\)

Question 507:

• JAMB 2010

Evaluate \(\begin{vmatrix} 2 & 0 & 5 \\ 4 & 6 & 3 \\ 8 & 9 & 1 \end{vmatrix}\)

A. 5y - 2x -18 = 0
B. 102
C. -102
D. -42

Question 508:

• JAMB 2010

If P = \(\begin{pmatrix} 2 & -3 \\ 1 & 1 \end{pmatrix}\)

A. \(\begin{pmatrix} -{\frac{1}{5}} & -{\frac{3}{5}} \\ -{\frac{1}{5}} & -{\frac{2}{5}} \end{pmatrix}\)
B. \(\begin{pmatrix} {\frac{1}{5}} & {\frac{3}{5}} \\ {\frac{1}{5}} & {\frac{2}{5}} \end{pmatrix}\)
C. \(\begin{pmatrix} -{\frac{1}{5}} & {\frac{3}{5}} \\ -{\frac{1}{5}} & {\frac{2}{5}} \end{pmatrix}\)
D. \(\begin{pmatrix} {\frac{1}{5}} & {\frac{3}{5}} \\ -{\frac{1}{5}} & {\frac{2}{5}} \end{pmatrix}\)

Question 509:

• JAMB 2010

W is directly proportional to U. If W = 5 when U = 3, find U when W = \(\frac{2}{7}\)

A. \(\frac{6}{35}\)
B. \(\frac{10}{21}\)
C. \(\frac{21}{10}\)
D. \(\frac{35}{6}\)

Question 510:

• JAMB 2011

Make R the subject of the formula if T = \(\frac {KR^2 + M}{3}\)

A. \(\sqrt\frac{3T - K}{M}\)
B. \(\sqrt\frac{3T - M}{K}\)
C. \(\sqrt\frac{3T + K}{M}\)
D. \(\sqrt\frac{3T - K}{M}\)