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.
12.00%
11.00%
10.71%
0.12%
Correct answer is A
Error = (16.8cm - 15cm = 1.8cm\)
\(\text{% error} = \frac{1.8}{15} \times 100% = \frac{180}{15}\)
= \(12.00%\)
Convert 3.1415926 to 5 decimal places
3.14160
3.14159
0.31415
3.14200
Correct answer is B
3.1415926 \(\approxeq\) 3.14159 (to 5 d.p)
13135
21315
43025
11035
Correct answer is A
\(3310_{5} - 1442_{5} = 1313_{5}\)
You can either do a direct subtraction (which is easier), or convert both numbers in base 10, subtract and convert back to base 5 (if you're not sure).
Find the standard deviation of the following data -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5
2
3
\(\sqrt{10}\)
\(\sqrt{11}\)
Correct answer is C
x = \(\frac{\sum x}{N}\)
= \(\frac{0}{11}\)
= 0
\(\begin{array}{c|c} x & (x - x) & (x - x)^2 \\\hline -5 & -5 & 25 \\ -4 & -4 & 16 \\-3 & -3 & 9 \\ -2 & -2 & 4 \\ -1 & -1 & 1\\ 0 & 0 & 0\\ 1 & 1 & 1\\ 2 & 2 & 4\\ 3 & 3 & 9\\ 4 & 4 & 16 \\5 & 5 & 25\\ \hline & & 110\end{array}\)
S.D = \(\sqrt{\frac{\sum(x - x)^2}{\sum f}}\)
= \(\sqrt{\frac{110}{11}}\)
= \(\sqrt{10}\)
\(\frac{5}{11}\)
\(\frac{1}{2}\)
\(\frac{6}{11}\)
\(\frac{7}{10}\)
Correct answer is C
n(even numbers between 10 and 20 inclusive) = 6
n(numbers between 10 and 20) = 11
P(even) = \(\frac{6}{11}\)