Jamb Mathematics 2015 Past Questions and Answers

Question 96:

• JAMB 2015

Find the value of x if \( [ 1 ÷ 64^{(x + 2)}]= [4^{(x − 3)} ÷ 16^x ] \)

A. \( \frac{3}{2} \)
B. \( \frac{2}{3} \)
C. \( \frac{1}{3} \)
D. \( -\frac{3}{2} \)

Question 97:

• 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 98:

• 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 99:

• 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 100:

• 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