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.
11.5
12.5
14.0
14.5
Correct answer is D
Median = L1 + (\(\frac{Ef}{fm}\)) - fo
\(\frac{\sum f}{2}\)
= \(\frac{20}{2}\)
= 10, L1 = 10.5, fo = 6, fm = 5
Median = 10.5 + \(\frac{(10 - 6)}{5}\)5
= 10.5 + 4
= 14.5
27
35
38
49
Correct answer is D
Average age of 110 students = 16
∴ Total age = 16 x 10 = 160 years
Age of teachers = x, total number of people now = 11
mean age = 19
Total age of new group = 19 x 11 = 209
Age of teachers = x = (209 - 160) = 49 yrs
13.2g
15.0g
16.8g
17.5g
Correct answer is C
Mode = a + \(\frac{(b - a)(F_m - F_b)}{2F_m - F_a - F_b}\)
= \(L_1 + \frac{\Delta_1 x^\text{c}}{\Delta_1 + \Delta_2}\)
= \(10 + \frac{(20 - 10)(27 - 10)}{2(27) - 10 - 19}\)
= 10 + \(\frac{170}{25}\)
= 10 + 6.8
= 16.8
6
10
13
14
Correct answer is D
Number of students scoring at least 50 marks = Number of students scoring 50 and above From the table 53, 70, 84, 59, 90, 60, 81, 73, 50, 37, 67, 68, 64, 52. Hence, 14 students scored at least 50 marks
20o
80o
120o
140o
Correct answer is D
Angle corresponding to 7 in a pie chart will be \(\frac{7 \times 360}{\text{sum of items}}\)
= \(\frac{7 }{18}\) x 360
= 140o