Test your knowledge of advanced level mathematics with this aptitude test. This test comprises Further Maths questions and answers from past JAMB and WAEC examinations.
Find the variance of 1, 2, 0, -3, 5, -2, 4.
527
407
327
277
Correct answer is A
Mean, ˉx=1+2+0+(−3)+5+(−2)+47=77=1
x | (x−ˉx) | (x−ˉx)2 |
1 | 0 | 0 |
2 | 1 | 1 |
0 | -1 | 1 |
-3 | -4 | 16 |
5 | 4 | 16 |
-2 | -3 | 9 |
4 | 3 | 9 |
Total (n) = 7 |
52 |
Variance = \frac{\sum (x - \bar{x)^{2}}{n}
= 527
In how many ways can 9 people be seated on a bench if only 3 places are available?
1200
504
320
204
Correct answer is B
No explanation has been provided for this answer.
5.7ms−1
6.0ms−1
60.0ms−1
77.5ms−1
Correct answer is A
s=ut+12at2
250=6u+12(12)(62)
250=6u+216⟹6u=250−216=34
u=346≊
For what values of m is 9y^{2} + my + 4 a perfect square?
\pm {2}
\pm {3}
\pm {6}
+12
Correct answer is D
No explanation has been provided for this answer.