Jamb Mathematics 2021 Past Questions and Answers

Question 16:

• JAMB 2021

The locus of a point that moves so that it is equidistant from two intersecting straight lines is the?

A. Perpendicular bisector of the two lines
B. Angle bisector of the two lines
C. Bisector of the two lines
D. Line parallel to the two lines

Question 17:

• JAMB 2021

4, 16, 30, 20, 10, 14 and 26 are represented on a pie chart. Find the sum of the angles of the bisectors representing all numbers equals to or greater than 16

A. 48^o
B. 84^o
C. 92^o
D. 276^o

Question 18:

• JAMB 2021

The mean of ten positive numbers is 16. When another number is added, the mean becomes 18. Find the eleventh number

A. 3
B. 16
C. 38
D. 30

Question 19:

• JAMB 2021

Two numbers are removed at random from the numbers 1, 2, 3 and 4. What is the probability that the sum of the numbers removed is even?

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

Question 20:

• JAMB 2021

Find the probability that a number selected at random from 41 to 56 is a multiple of 9

A. \(\frac{1}{8}\)
B. \(\frac{2}{15}\)
C. \(\frac{3}{16}\)
D. \(\frac{7}{8}\)