Mathematics Past Questions and Answers

The marks scored by 30 students in a Mathematics test are recorded in the table below:<br/><table class='tbn'><tbody><tr><td> Scores (Mark) </td><td> 0 </td><td> 1 </td><td> 2 </td><td> 3 </td><td> 4 </td><td> 5 </td></tr><tr><td> No of students </td><td> 4 </td><td> 3 </td><td> 7 </td><td> 8 </td><td> 6 </td><td> 2 </td></tr></tbody></table><br/><br/><br/>What is the total number of marks scored by the children?<br/>

If \(f(x) = 3x^3 + 4x^2 + x - 8\), what is the value of f(-2)?

Tade bought 200 mangoes at 4 for #2.50. 30 out of the mangoes got spoilt and the remaining were sold at 2 for #2.40. Find the percentage profit or loss.

In the diagram above, O is the centre of the circle ABC, < ABO = 26° and < BOC = 130°. Calculate < AOC.

If the volume of a frustrum is given as \(V = \frac{\pi h}{3} (R^2 + Rr + r^2)\), find \(\frac{\mathrm d V}{\mathrm d R}\).