Mathematics JAMB Past Questions

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1446

The sum of the progression is 1 + x + x2 + x3 + ......

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

View Answer & Discuss (5) JAMB 1978

1447

The number of telephone calls N between two cities A and B varies directly as the population P\(_{A}\), P\(_B\) respectively and inversely as the square of the distance D between A and B. Which of the following equations represents this relation?

A. N = \(\frac{kp_A}{D^2} + {cp_B}{D^2}\)
B. N = \(\frac{k P_{A} P_{B} }{D^2}\)
C. N = \(\frac{kD_AP_D}{B^2}\)
D. N = \(\frac{kD^2_AP_D}{B}\)

View Answer & Discuss (2) JAMB 1978

1448

Find the square root of 170 - 20\(\sqrt{30}\)

A. 2 \(\sqrt{10}\) - 5\(\sqrt{3}\)
B. 2 \(\sqrt{5}\) - 5\(\sqrt{6}\)
C. 5 \(\sqrt{10}\) - 2\(\sqrt{3}\)
D. 3 \(\sqrt{5}\) - 8\(\sqrt{6}\)

View Answer & Discuss (14) JAMB 1978

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1449

If x\(^2\) + 4 = 0, then x ?

A. 4
B. -4
C. 2
D. -2
E. None of the above

View Answer & Discuss (16) JAMB 1978

1450

What is the number whose logarithm to base 10 is 2.3482?

A. 223
B. 2228
C. 2.235
D. 22.37
E. 0.2229

View Answer & Discuss (6) JAMB 1978

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