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.
17/50
3/25
1/50
3/250
Correct answer is A
Blue balls = 5
Red balls = 3
White balls = 2
Total = 10
P(Two blue) = 5/10 * 5/10 = 25/100
P(Two Red) = 3/10 * 3/10 = 9/100
∴P(Two blue or two red balls)
= 25/100 + 9/100
= 34/100
= 17/50
How many possible ways are there of seating seven people P,Q,R,S,T,U and V at a circular table
360
720
2520
5040
Correct answer is B
(n - 1)! = (7 - 1)!
= 6!
= 6*5*4*3*2*1
= 720 ways
In how many ways can 6 coloured chalks be arranged if 2 are the same colour?
60
120
240
360
Correct answer is D
\(\frac{6!}{2!}=ways=\frac{6\times5\times4\times3\times2!}{2!}\\=6\times5\times4\times3\\=360\hspace{1mm}ways\)
Find the value of t if the standard deviation of 2t, 3t, 4t, 5t, and 6t is √2
1
2
3
4
Correct answer is A
No explanation has been provided for this answer.
1.35
1.65
1.95
3.00
Correct answer is C
1.35, 1.25, 1.35, 1.40, 1.35, 1.50, 1.35, 1.50, and 1.20
Modal height = 1.35
Range (r) = 1.50 - 1.20
= 0.30
∴m + 2r = 1.35 + 2(0.30)
= 1.35 + 0.60
= 1.95