Jamb 2015 Mathematics Questions
Question 31:
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 24πcm<sup style='font-size: smaller;'>2</sup>
- B 21πcm<sup style='font-size: smaller;'>2</sup>
- C 15πcm<sup style='font-size: smaller;'>2</sup>
- D 17πcm<sup style='font-size: smaller;'>2</sup>
Question 33:
The volume of a cylinder whose height is 4cm and whose radius 5cm is equal to (π = 3.14)
- A 3.13cm<sup style='font-size: smaller;'>2</sup>
- B 145cm<sup style='font-size: smaller;'>2</sup>
- C 314cm<sup style='font-size: smaller;'>2</sup>
- D 214cm<sup style='font-size: smaller;'>2</sup>
Question 34:
\( \int x^2 \text{Sin}x \Delta x \)
- A −Cos x + 2xSin x + C
- B −Cos x + 2
- C X<sup style='font-size: smaller;'>2</sup>Cos x + 2xSin x + 2Cos x+ C
- D −x<sup style='font-size: smaller;'>2</sup>Cos x + 2xSinx + 2Cos x + C
Question 35:
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 \( \frac{1}{15} \)