NumericalModerate1.5 marks
4(a)
A game of numbers has cards marked with 11, 12, 13, … 40. A card is drawn at random. Find the probability that the number on the card drawn is :
Divisible by 7
Topic: Probability
Previous-year question practice database
Answer
Exam answer
Cards are numbered from 11 to 40.
Total number of cards = 30
Numbers divisible by 7: 14, 21, 28, 35
Favourable outcomes = 4
Probability = 4/30 = 2/15
Answer:
2/15.
Explanation
Among the integers 11 through 40, exactly four are multiples of 7. Therefore the probability is 4 out of 30.
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