How good are you with figures and formulas? Find out with these Mathematics past questions and answers. This Test is useful for both job aptitude test candidates and students preparing for JAMB, WAEC, NECO or Post UTME.
Convert the decimal number 89 to a binary number
101101
111001
1001001
1001101
1011001
Correct answer is E
No explanation has been provided for this answer.
The 6th term of a G.P is \(\frac{-2}{27}\) and its first term is 18. What is the common ratio?
-1/2
-1/3
1/4
2
3
Correct answer is B
a, ar, ar\(^2\), ar\(^3\), ar\(^4\), ar\(^5\)
6th term = ar\(^5\) = \(\frac{-2}{27}\)
1st term = a = 18
=> ar\(^5\)
= 18r\(^5\) =\(\frac{-2}{27}\)
r\(^5\) = \(\frac{-2}{27 * 18}\)
→ \(\frac{-1}{27 * 9}\)
r\(^5\) = \(\frac{-1}{243}\)
r = \(^5\)√[\(\frac{-1}{243}\)]
r = \(\frac{-1}{3}\)
2/13
5/13
5/11
5/6
11/13
Correct answer is B
2r, 6w, 5b balls Total balls = 2 + 6 + 5 = 13 balls p(black) = 5/13
1/12
5/ 36
1/ 6
1/4
5/18
Correct answer is C
No explanation has been provided for this answer.
Find the median of the following numbers 2.64, 2.50, 2.72, 2.91 and 2.35.
2.91
2.72
2.64
2.50
2.35
Correct answer is C
Arranging the numbers in ascending order, we have
2.35, 2.50, 2.64, 2.72, 2.91.
The median = 2.64