Jamb Mathematics Questions - Indices, Logarithms and Surds
Question 11:
Evaluate (\(\sin\)45o + \(\sin\)30o ) in surd form
- A \(\frac{\sqrt{3}}{2\sqrt{2}}\)
- B \(\frac{1}{2}\)
- C \(\frac{1}{2}\)√2
- D 1 + \(\frac{\sqrt{2}}{2}\)
Question 12:
Evaluate (\(\sin\)45o + \(\sin\)3o ) in surd form
- A \(\frac{\sqrt{3}}{2\sqrt{2}}\)
- B √3 − \(\frac{1}{2}\)
- C \(\frac{1}{2}\)√2
- D 1 + \(\frac{\sqrt{2}}{2}\)
Question 13:
If α and β are the roots of the equation 3x2 + bx − 2 = 0. Find the value of \(\frac{1}{\alpha}\) + \(\frac{1}{\beta}\)
- A \(\frac{-5}{3}\)
- B \(\frac{-2}{3}\)
- C \(\frac{1}{2}\)
- D \(\frac{5}{2}\)
Question 14:
Given U = {x: x is a positive integer less than 15} and P = {x: x is even number from 1 to 14}. Find the compliment of P.
- A {1, 3, 5, 7, 9, 11, 13, 15}
- B {2, 3, 5, 7, 9, 11, 13}
- C {1, 3, 5, 7, 9, 11, 13}
- D {2, 3, 5, 7, 11, 15}
Question 15:
Simplify \(\frac{0.026 \times 0.36}{0.69}\). Leave your answer in standard form
- A 1.36 x 10<sup style='font-size: smaller;'>-4</sup>
- B 1.36 x 10<sup style='font-size: smaller;'>-3</sup>
- C 1.36 x 10<sup style='font-size: smaller;'>-1</sup>
- D 1.36 x 10<sup style='font-size: smaller;'>-2</sup>