Mathematics

Find the value of k in the equation: √28+√112−√k=√175

A. √28 B. 7 C. 28 D. √7 Correct Answer: Option B B. 7

5 years ago

In a committee of 5, which must be selected from 4 males and 3 females. In how many ways can the members be chosen if it were to include 2 females?

A. 144 ways B. 15 ways C. 185 ways D. 12 ways Correct Answer: Option D D. 12 ways

5 years ago

If the 3rd and 7th terms of a G.P are 9 and 1/9 respectively. Find the common ratio.

A. 13 B. 19 C. 23 D. 29 Correct Answer: Option A A. 13

5 years ago

Find the probability that a number selected at random from 21 to 34 is a multiple of 3.

A. 3/11 B. 2/9 C. 5/14 D. 5/13 Correct Answer: Option C C. 5/14

5 years ago

If M varies directly as N and inversely as the root of P. Given that M = 3, N = 5 and P = 25. Find the value of P when M = 2 and N = 6.

A. 36 B. 63 C. 47 D. 81 Correct Answer: Option D D. 81

5 years ago

A binary operation Δ is defined by a Δ b = a + 3b + 2. Find (3 Δ 2) Δ 5

A. 35 B. 59 C. 28 D. 87 Correct Answer: Option C C. 28

5 years ago

A factory worker earns ₦50,000 per month out of which he spends 10% on his children’s education, ₦13,600 on Food, 3% on electricity and uses the rest for his personal purpose. How much does he have left?

A. N21,850 B. N18,780 C. N27,400 D. N32,500 Correct Answer: Option C C. N27,400

5 years ago

Find the equation of the locus of a point A(x, y) which is equidistant from B(0, 2) and C(2, 1)

A. 4x + 2y = 3 B. 4x - 3y = 1 C. 4x - 2y = 1 D. 4x…

5 years ago

A bricklayer charges ₦1,500 per day for himself and ₦500 per day for his assistant. If a two-bedroom flat was built for ₦95,000 and the bricklayer worked 10 days more than his assistant, how much did the assistant receive?

A. N20,000 B. N28,000 C. N31,200 D. N41,000 Correct Answer: Option A A. N20,000

5 years ago

A man bought a car newly for ₦1,250,000. He had a crash with the car and later sold it at the rate of ₦1,085,000. What is the percentage gain or loss of the man?

A. 43.7% loss B. 13.2% gain C. 13.2% loss D. 43.7% gain Correct Answer: Option C C. 13.2% loss

5 years ago
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