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.
\(\frac{6}{7}\) < 0.865 < \(\frac{13}{15}\)
\(\frac{13}{15}\) < \(\frac{6}{7}\) < 0.865
\(\frac{6}{7}\) < \(\frac{13}{15}\) < 0.865
0.865 < \(\frac{6}{7}\) < \(\frac{13}{15}\)
Correct answer is A
\(\frac{6}{7}\), \(\frac{13}{15}\), 0.8650
In ascending order, we have 0.8571, 0.8650, 0.8666
i.e. \(\frac{6}{7}\) < 0.8650 < \(\frac{13}{15}\)
If three numbers P, Q, R are in ratio 6 : 4 : 5, find the value of \(\frac{3p - q}{4q + r}\)
\(\frac{3}{2}\)
\(\frac{2}{3}\)
2
3
Correct answer is B
P : Q : r = 6 : 4 : 5
5 = 6 + 4 + 5
= 15
P = \(\frac{6}{15}\), q = \(\frac{4}{15}\), r = \(\frac{5}{15}\) = \(\frac{1}{3}\)
To find \(\frac{3p - q}{4q + r}\)
3p - q = 3 x \(\frac{6}{15}\) - \(\frac{4}{15}\)
\(\frac{18}{15}\) - \(\frac{4}{15}\) = \(\frac{14}{15}\)
∴ 4q + r = 4 x \(\frac{4}{15}\) + \(\frac{5}{15}\)
\(\frac{16}{15}\) = \(\frac{16}{15}\) + \(\frac{5}{15}\)
= \(\frac{21}{15}\)
\(\frac{14}{15}\) x \(\frac{15}{21}\) = \(\frac{14}{21}\)
= \(\frac{2}{3}\)
(27, 4)
(14,4)
(13,4)
(4,4)
Correct answer is A
M = mode = the number having the highest frequency = 4
S = Number of students with 4 or less marks
= 14 + 7 + 4 + 2
= 27
∴ (M,S) = (27, 4)
\(\frac{1}{7}\)
\(\frac{11}{18}\)
\(\frac{7}{18}\)
\(\frac{7}{11}\)
Correct answer is C
Prob. of purple shirt is \(\frac{7}{18}\)
Find the probability that a number selected at random from 40 to 50 is a prime
\(\frac{5}{11}\)
\(\frac{5}{11}\)
\(\frac{3}{11}\)
\(\frac{4}{11}\)
Correct answer is C
From 40 to 50 = these number are prime i.e. 41, 43, 47
prob. of selecting a prime No. is \(\frac{3}{11}\)