Jamb Mathematics 2019 Past Questions and Answers

Question 61:

• JAMB 2019

If the 3rd and 7th terms of a G.P are 9 and 1/9 respectively. Find the common ratio.

A. \(\frac{1}{3}\)
B. \(\frac{1}{9}\)
C. \(\frac{2}{3}\)
D. \(\frac{2}{9}\)

Question 62:

• JAMB 2019

If the universal set μ = {x : 1 ≤ x ≤ 20} and
A = {y : multiple of 3}
B = |z : odd numbers}
Find A ∩ B

A. {1, 3, 6}
B. {3, 5, 9, 12}
C. {3, 9, 15}
D. {2, 3, 9}

Question 63:

• JAMB 2019

In a committee of 5, which must be selected from 4 males and 3 females. In how many ways can the members be chosen if it were to include 2 females?

A. 144 ways
B. 15 ways
C. 185 ways
D. 12 ways

Question 64:

• JAMB 2019

Find the value of k in the equation: \(\sqrt{28} + \sqrt{112} - \sqrt{k} = \sqrt{175}\)

A. \(\sqrt{28}\)
B. 7
C. 28
D. \(\sqrt{7}\)

Question 65:

• JAMB 2019

Evaluate \(\frac{2\log_{3} 9 \times \log_{3} 81^{-2}}{\log_{5} 625}\)

A. 4
B. -32
C. -8
D. 16