UNN Mathematics 2019/2020 Past Questions

(1.28x10⁴) (6.4x10²) equals

A stick of 250cm is measured as 255cm. The percentage error is

The sum of infinity of a Geometric progression is 100. Find its first term if the common ratio is 2/5

"Thirty boys and x girls sat for a test. The mean of the boys' scores and that of the girls were respectively 6 and 8. Find x if the total score was 468.

The value of $3/2 × {10}/{21} × 4/{22} × {77}/{5} = $

Evaluate (2⁰ + 4^-1/2)²

Express 130 kilometres per second in metres per hour.

Solve the system of equations: 2^x+y = 32, 3^3y-x = 27

A binary operation on the set of real numbers excluding -1 is such that for all m, n ε R, m Δ n = m + n + mn. Find the identity elmeent of the operation.

What is the mean of the data t, 2t-1, t-2, 2t-1, 4t and 2t+2?

The letters of the word "MATRICULATION" are cut and put into a box. One letter is drawn at random from the box. Find the probability of drawing a vowel.

The weights of 30 new-born babies are given as follows: 6, 9, 5, 7, 6, 7, 5, 8, 9, 5, 7, 5, 8, 7, 8, 7, 5, 6, 5, 7, 6, 9, 9, 7, 8, 8, 7, 8, 9, 8. The mode is

Determine the maximum value of y = 3x² - x³

By how much will the mean of 30, 5, 31, 55, 43 and 44 less than the median

Find the derivative of (2x + 3x)(1 - X) with respect to x