Jamb Mathematics 2005 Past Questions and Answers

Question 16:

• JAMB 2005

The diagram above is the graph of the function f(x). Determine the range of values of x for which f(x) \(\geq\) 0

A. X \(\leq\) 2
B. 0 \(\leq\) x \(\leq\) 2
C. -2 \(\leq\) x \(\leq\) 0, x \(\geq\) 2
D. X \(\leq\) -2, 0 \(\leq\) x \(\leq\) 2

Question 17:

• JAMB 2005

If the 7th term of an AP is twice the third term and the sum of the first four terms is 42, find the common difference.

A. 6
B. 3
C. 2
D. 1

Question 18:

• JAMB 2005

Find the sum of the first 20 terms of the series 8, 12, 16, ....., 96

A. 1400
B. 1040
C. 960
D. 920

Question 19:

• JAMB 2005

An operation * is defined on the set of real numbers by a * b = ab + 2(a + b + 1). find the identity element

A. 2
B. 1
C. -1
D. -2

Question 20:

• JAMB 2005

In the diagram above calculate the value of x

A. 60^o
B. 100^o
C. 120^o
D. 140^o