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.
Evaluate, correct to four significant figures, (573.06 x 184.25).
105600.00
105622.00
105500.00
105632.00
Correct answer is A
573.06 x 184.25 = 105,586.305
1,05600.00 to four significant figure
What are the Rules for significant figures?
Significant Figures
If a dress is sold for #3800.00 at 20% discount. what is its original price?
#3,000.00
#4,000.00
#5,000.00
#4,750.00
Correct answer is D
It is given that the cost of the item reduces to #3800.00 after the discount on the item.
Let original price = x
x – (20% of x) = 100
⇒ x – 0.2x = 100
⇒ 0.8x = #3800
⇒ x = \(\frac{3800}{0.8}\)
⇒ x = 4,750
The number line represented by the inequality
x≤2
x<2
x≥2
x>2
Correct answer is C
x ≥ 2 is represented by an arrow with an filled-in dot above the 2.
The arrow points in the direction of all the numbers that are greater than 2.
x <-2
x>2
x>-2
x<2
Correct answer is A
Three times a certain number (x) = 3x
minus 2 = -2
is less than = <
the number minus 6 = x -6
Mathematically; 3x - 2 < x - 6
collect like terms
3x - x < -6 + 2
2x < -4
x < -2 is the possible values of x
If n(P) = 20 and n(Q) = 30 and n(PuQ) = 40, find the value n(PnQ)
10
30
15
40
Correct answer is A
n(PuQ) = n(p) + n(q) - n(PnQ)
40 = 20 + 30 - n(PnQ)
n(PnQ) = 50 - 40 = 10