NUMBER AND NUMERATION - Jamb Mathematics Past Questions and Answers

Question 491:

• JAMB 2009

Simplify \(7\frac{1}{12}-4\frac{3}{4}+2\frac{1}{2}\)

A. 4
B. 4¹/₆
C. 4⁵/₆
D. 5¹/₆

Question 492:

• JAMB 2009

Evaluate \(\frac{81.81+99.44}{20.09+36.16}\) correct to 3 significant figures.

A. 6.24
B. 3.22
C. 2.78
D. 2.13

Question 493:

• JAMB 2009

A man bought a second-hand photocopying machine for N34,000. He serviced is at a cost od N2,000 and then sold it at a profit of 15%. What was the selling price?

A. N37,550
B. N40,400
C. N41,400
D. N42,400

Question 494:

• JAMB 2009

A student spent 1/5 of his allowance on books, 1/2 of remainder on food and kept the rest for contingencies. What fraction was kept?

A. ⁷/₁₅
B. ⁸/₁₅
C. ²/₅
D. ⁴/₅

Question 495:

• JAMB 2009

If log₁₀2 = 0.3010 and log₁₀7 = 0.8451, evaluate log₁₀280

A. 3.4471
B. 2.4471
C. 1.4471
D. 1.4071