Mathematics Past Questions and Answers

The table shows the scores of 2000 candidates in an entrance examination into a private secondary school.

% Mark	11-20	21-30	31-40	41-50	51-60	61-70	71-80	81-90
No of pupils	68	184	294	402	480	310	164	98

(a) Prepare a cumulative frequency table and draw the cumulative frequency curve for the distribution.
(b) Use your curve to estimate the : (i) cut off mark, if 300 candidates are to be offered admission ; (ii) probability that a candidate picked at random, scored at least 45%.

Express (0.0425 / 2.5) as a fraction

Express (0.0425 / 2.5) as a fraction

If P = {3, 5, 6} and Q = {4, 5, 6} then P∩Q equals

A and B are two sets. The number of elements in A∪B is 49, the number in A is 22 and number in B is 34. How many elements are in A ∩ E?