Jamb Mathematics Past Questions and Answers

Question 201:

• JAMB 2017

If y = x Sin x, find \(\frac{dy}{dx}\) when x = \(\frac{\pi}{2}\)

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

Question 202:

• JAMB 2017

If temperature t is directly proportional to heat h, and when t = 20oC, h = 50 J, find t when h = 60J

A. 24^oC
B. 20^oC
C. 34^oC
D. 30^oC

Question 203:

• JAMB 2017

Evaluate 1 - (\(\frac{1}{5}\) x \(\frac{2}{3}\)) + ( 5 + \(\frac{2}{3}\))

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

Question 204:

• JAMB 2017

Given m = N\(\sqrt{\frac{SL}{T}}\) make T the subject of the formula

A. \(\frac{\text{NSL}}{M}\)
B. \(\frac{N^2SL}{M^2}\)
C. \(\frac{N^2SL}{M}\)
D. \(\frac{NSL}{M^2}\)

Question 205:

• JAMB 2019

A binary operation \(\otimes\) is defined by \(m \otimes n = mn + m - n\) on the set of real numbers, for all m, n \(\in\) R. Find the value of 3 \(\otimes\) (2 \(\otimes\) 4).

A. 6
B. 25
C. 15
D. 18