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.
I, II and III
I and II
II and III
I and III
Correct answer is A
No explanation has been provided for this answer.
4
3
1
2
Correct answer is B
Range = 18 - 15
= 3
378 ways
462 ways
840 ways
924 ways
Correct answer is A
\(^{3}C_{1} \times ^{9}C_{5}=\frac{3!}{(3-1)!1!}\times \frac{9!}{(9-5)!5!}\\=\frac{3!}{2!1!}\times \frac{9!}{4!5!}\\=\frac{3 \times 2!}{2!\times 1}\times \frac{9\times8\times7\times6\times5!}{4\times3\times2\times1\times5!}\\=3\times9\times2\times7\\=378 \hspace{1mm}ways\)
9/35
11/35
4/7
3/7
Correct answer is C
Gold medals = 30
silver medals = 22
Bronze medals = 18/70
P(Gold medals) = 30/70 = 3/7
∴ P(not Gold medal) = 1 - 3/7
= 4/7
9
7
42
15
Correct answer is A
Let the number of students = x
Total age of the students = 15x
Total age including age of the teacher = 15x + 45
Mean of their ages; (15x + 45)/(x + 1) = 18
15x + 45 = 18(x + 1)
15x + 45 = 18x + 18
18x - 15x = 45 - 18
3x = 27
x = 9