Jamb Mathematics 2015 Past Questions and Answers

Question 31:

• JAMB 2015

A pipe made of metal 10cm thick has an external radius of 11cm. find the area of metal in making 2.4cm of pipe

A. 24πcm²
B. 21πcm²
C. 15πcm²
D. 17πcm²

Question 32:

• JAMB 2015

Solve x² − 2x − 3 = 0

A. X = 2 or 1
B. X = 3 or -1
C. X = 1 or 0
D. X = 1 or 2

Question 33:

• JAMB 2015

The volume of a cylinder whose height is 4cm and whose radius 5cm is equal to (π = 3.14)

A. 3.13cm²
B. 145cm²
C. 314cm²
D. 214cm²

Question 34:

• JAMB 2015

\( \int x^2 \text{Sin}x \Delta x \)

A. −Cos x + 2xSin x + C
B. −Cos x + 2
C. X²Cos x + 2xSin x + 2Cos x+ C
D. −x²Cos x + 2xSinx + 2Cos x + C

Question 35:

• JAMB 2015

The probability of an event A is 1/5. The probability of B is 1/3 . The probability both A and B is 1/15. What is the probability of either event A or B or both

A. \( \frac{2}{15} \)
B. \( \frac{3}{4} \)
C. \( \frac{7}{15} \)
D. \( \frac{1}{15} \)