IGCSE Mathematics (0980) — October–November 2023, Paper 21
22 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The diagram shows an isosceles triangle with two equal base angles of 41° and apex angle x°. Find the value of x.
Answer this question and get it marked →The stem-and-leaf diagram shows the time, in minutes, for 15 people to complete a race. 1 6 6 7 ; 2 1 3 3 4 5 6 7 7 7 ; 3 0 1 1. Key: 1 6 represents 16 minutes. Find the mode.
Answer this question and get it marked →Complete this statement: When x = ......... , x + 3 = 8.
Answer this question and get it marked →The table shows information about Amir's shopping. Complete the table. Fruit Cost per kilogram Number of kilograms Amir buys Cost --- --- --- --- Oranges $2.35 3.2 $.........…
Answer this question and get it marked →For each of 10 office workers, the scatter diagram shows salary and value of car. One person has a salary of $28 000. Find the value of their car.
Answer this question and get it marked →The exchange rate is 1 Singapore dollar = 0.62 euros. Find the value of 161.20 euros in Singapore dollars.
Answer this question and get it marked →Calculate. (3/7) × (11/3) × (10/3) [i.e. 3 3/7 × 7? — calculate 3 3/7 × ... ]. The calculation evaluates to 24.
Answer this question and get it marked →Find the highest common factor (HCF) of 140 and 126.
Answer this question and get it marked →Solve. 4(2x − 3) ≥ 4(3 + 3x) [the inequality is 4(2x − 3) ≥ 43 + 3x]. Solve for x.
Answer this question and get it marked →Write 0.4 with 2 recurring (0.4̇2̇, i.e. 0.4242...) as a fraction in its simplest form. You must show all your working.
Answer this question and get it marked →At the end of 2021 there were 27 000 rhinos living in the wild. The number is expected to decrease exponentially by 3% each year. Work out the number expected to be living in the…
Answer this question and get it marked →The Venn diagram shows the number of elements in sets A, B and the universal set. Region only-A = 5x + 5, intersection A∩B = x, only-B = 12 − x, outside = 15. n(ℰ) = 52. Find n(A…
Answer this question and get it marked →By shading the unwanted regions of the grid, draw and label the region R which satisfies these inequalities: y 1, x ≤ 2, y ≥ x + 2. [The grid has x from −5 to 7 and y from −3 to…
Answer this question and get it marked →P = 2w + 2h. w = 11 and h = 9.5, both correct to 2 significant figures. Find the lower bound and the upper bound for P.
Answer this question and get it marked →A, B and C are points on the circumference of a circle, centre O. Tangent DE touches the circle at C. Angle BCE = 53° and angle ACO = 20°. Find the value of x (angle x is at the…
Answer this question and get it marked →A triangle has sides 8.3 cm and 16.2 cm with an angle of 105° opposite the 16.2 cm side, and angle y° opposite the 8.3 cm side. Calculate the value of y.
Answer this question and get it marked →Sketch the graph of y = cos x for 0° ≤ x ≤ 360°.
Answer this question and get it marked →Write as a single fraction in its simplest form. (x^2 − 10x − 60? ) ... [the expression is (10x − 60)/(x^2 − 30x) — write (10x^2 − 60x)/(x^2 − x − 30) as a single simplified…
Answer this question and get it marked →The diagram shows a cuboid ABCDEFGH. AB = 15.1 cm, BC = 4.5 cm and CG = 9.2 cm. Calculate the angle that the diagonal BH makes with the face ADHE.
Answer this question and get it marked →ABCD is a rhombus with side length 13.6 cm. Angle ABC = 41°. BAC is a sector of a circle with centre B. DAC is a sector of a circle with centre D. Calculate the shaded area.
Answer this question and get it marked →← October–November 2023 Paper 31 · October–November 2023 Paper 11 →