Jamb Mathematics 2007 Past Questions and Answers

Question 21:

• JAMB 2007

W ∝ L² and W = 6 when L = 4. If L = √17 find W

A. 6⁷/₈
B. 6⁵/₈
C. 6³/₈
D. 6¹/₈

Question 22:

• JAMB 2007

A binary operation Δ is defined by aΔb = a + b + 1 for any numbers a and b. Find the inverse of the real number 7 under the operation Δ, if the identity element is -1

A. -7
B. -9
C. 5
D. 9

Question 23:

• JAMB 2007

The nth term of the sequence ³/₂, 3, 7, 16, 35, 74 ..... is

A. 5 . 2^n-2 - n
B. 5 . 2^n-2 - (n+1) / 2
C. 3 . 2^n-2
D. ³/₂ n

Question 24:

• JAMB 2007

Find the sum to infinity of the series \(2+\frac{3}{2}+\frac{9}{8}+\frac{27}{32}+......\)

A. 1
B. 2
C. 8
D. 4

Question 25:

• JAMB 2007

Find y, if \(\sqrt{12}-\sqrt{147}+y\sqrt{3} = 0\)

A. 5
B. 1
C. 7
D. 3