Mathematics Past Questions and Answers

If the points (-1, t -1), (t, t - 3) and (t - 6, 3) lie on the same straight line, find the values of t.

If a fair coin is tossed four times, what is the probability of obtaining at least one head?

Forces 90N and 120N act in the directions and respectively. Find the resultant of these forces.

The deviations from the mean of a set of numbers are \((k+3)^{2}, (k+7), -2, \text{k and (} k+2)^{2}\), where k is a constant. Find the value of k.

Find the equation of a circle with centre (2, -3) and radius 2 units.