What is the mean deviation of x, 2x, x+1 and 3x. If their mean is 2?

• A. 0.5
• B. 1.0
• C. 1.5
• D. 2.0

An early morning jogger jogged to cover a distance of 1.5 kilometres and followed the same route back to where he started. The distance covered will be?

• (a) 1.5km
• (b) 2.25km
• (c) 3.0km
• (d)3.10km

If y = 3t³ + 2t² - 7t + 3, find \(\frac{dy}{dt}\) at t = -1

• A. -1
• B. 1
• C. -2
• D. 2

The seconds term of a geometric series is 4 while the fourth term is 16. Find the sum of the first five terms

• A. 60
• B. 62
• C. 54
• D. 64

The sum 11011₂, 1111₂ and 10m10n0₂. Find the value of m and n.

• A. m = 0, n = 0
• B. m = 1, n = 0
• C. m = 0, n = 1
• D. m = 1, n = 1

find the first quartile of 7,8,7,9,11,8,7,9,6 and 8.

• A. 8.5
• B. 7.0
• C. 7.5
• D. 8.0

Integrate \(\frac{1 - x}{x^3}\) with respect to x

• A. \(\frac{x - x^2}{x^4}\) + k
• B. \(\frac{x - x^2}{x^4}\) + k
• C. \(\frac{1}{x} - \frac{1}{2x^2}\) + k
• D. \(\frac{1}{3x^2} - \frac{1}{2x}\) + k

If \(2x^2 + kx - 14 = (x+2)(2x-7)\), find the value of K

• A. -3
• B. 5
• C. 9
• D. 11

A retailer sells at a discount of 15% of the marked price, if a customer pays N16,700.00 for an item, what is the marked price of the item?

• A. N 19,650.00
• B. N 13,750.00
• C. N 20,700.00
• D. N 22,700.00

(a) If \(\log_{10} 2 = 0.3010\) and \(\log_{10} 3 = 0.4771\), calculate without using tables, the value of \(\log_{10} 0.72\).

(b) A hawk on top of a tree, 20 metres high views a chick on the ground at an angle of depression of 39°. Find, correct to 2 significant figures, the distance of the chick from the bottom of the tree.