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2730 questions · page 71 of 137 · choose a topic above to narrow them down
SA-4024-PR-0072 marksL2 StandardNon-calculatorWithout replacement
A bag contains 4 red and 6 blue balls. Two are taken at random without replacement. Find the probability that both are red. Salam Academy Original Practice · Proposed mark scheme
SA-4024-PR3-0033 marksL2 StandardNon-calculatorWithout replacement
A bag has 5 red and 3 green balls. Two are taken without replacement. Find the probability that they are different colours. Salam Academy Original Practice · Proposed mark scheme
SA-4024-ST-0012 marksL2 StandardCalculatorFrequency tables
The scores of 20 students are: score 1 (frequency 3), score 2 (frequency 5), score 3 (frequency 8), score 4 (frequency 4). Calculate the mean score. Salam Academy Original Practice · Proposed mark scheme
SA-4024-ST-0052 marksL2 StandardNon-calculatorCharts & tables
In a pie chart, a sector of 72∘ represents 30 people. How many people does the whole pie chart represent? Salam Academy Original Practice · Proposed mark scheme
SA-4024-ST-0062 marksL2 StandardNon-calculatorAverages
The mean of five numbers is 12. Four of them are 10, 8, 15 and 11. Find the fifth number. Salam Academy Original Practice · Proposed mark scheme
SA-4024-ST-0072 marksL2 StandardNon-calculatorAverages
The mean of 8 numbers is 15. A ninth number, 24, is added. Find the new mean. Salam Academy Original Practice · Proposed mark scheme
SA-4024-ST-0102 marksL2 StandardNon-calculatorFrequency density
In a histogram, the class 30<x≤50 has a frequency density of 0.8. Find the frequency of this class. Salam Academy Original Practice · Proposed mark scheme
SA-4024-ST3-0062 marksL2 StandardCalculatorMedian & quartiles
Using the table (≤10: 5; ≤20: 17; ≤30: 35; ≤40: 40) and straight lines between the points, estimate the median. Salam Academy Original Practice · Proposed mark scheme
SA-4024-ST5-0042 marksL2 StandardNon-calculatorTypes of data
In a random sample of 50 students from a school of 1000, 12 walk to school. Estimate how many students in the school walk. Salam Academy Original Practice · Proposed mark scheme
SA-4024-TR-0063 marksL2 StandardCalculatorSine rule
In triangle ABC, angle A=40∘, angle B=65∘ and a=12 cm. Find b, to 3 significant figures. Salam Academy Original Practice · Proposed mark scheme
SA-4024-TR-0073 marksL2 StandardCalculatorCosine rule & area
In triangle ABC, b=7 cm, c=9 cm and angle A=50∘. Find a, to 3 significant figures. Salam Academy Original Practice · Proposed mark scheme
SA-4024-TR-0083 marksL2 StandardCalculatorCosine rule & area
A triangle has sides 5 cm, 7 cm and 9 cm. Find its largest angle, to 1 decimal place. Salam Academy Original Practice · Proposed mark scheme
SA-4024-TR-0122 marksL2 StandardNon-calculator3D lengths
A cuboid measures 6 cm by 8 cm by 24 cm. Find the length of its longest diagonal. Salam Academy Original Practice · Proposed mark scheme
SA-4024-TR2-0032 marksL2 StandardCalculatorFinding sides
In a right-angled triangle, the side opposite a 25∘ angle is 6 cm. Find the hypotenuse, to 3 significant figures. Salam Academy Original Practice · Proposed mark scheme
SA-4024-TR3-0013 marksL2 StandardCalculatorSine rule
In triangle ABC, a=9 cm, angle A=50∘ and b=7 cm. Find angle B, to 1 decimal place. Salam Academy Original Practice · Proposed mark scheme
SA-4024-TR4-0022 marksL2 StandardCalculator3D lengths
A cube has edges of 4 cm. Find the length of the diagonal from one corner to the opposite corner through the cube, to 3 significant figures. Salam Academy Original Practice · Proposed mark scheme
SA-4024-TV-0062 marksL2 StandardNon-calculatorEnlargements
Find the image of (2,3) under an enlargement with scale factor 3 and centre (1,1). Salam Academy Original Practice · Proposed mark scheme
SA-4024-TV-0072 marksL2 StandardNon-calculatorEnlargements
Find the image of (3,−1) under an enlargement with scale factor −2 and centre the origin. Salam Academy Original Practice · Proposed mark scheme
SA-4024-TV1-0022 marksL2 StandardNon-calculatorTranslate & reflect
The point (−3,4) is reflected in the line y=−x. Find its image. Salam Academy Original Practice · Proposed mark scheme
SA-4024-TV2-0032 marksL2 StandardNon-calculatorEnlargements
Find the image of (5,3) under an enlargement with scale factor 2 and centre (1,1). Salam Academy Original Practice · Proposed mark scheme