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Probability · Question 40 of 70

Question 40

EasyOriginal question

A number is chosen at random from 1 to 50. What is the probability that it is a perfect square?

Options for question 40

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. The squares up to 50 are 1, 4, 9, 16, 25, 36, 49: 7 numbers.

  2. 750\frac{7}{50}.

Worth noting

325\frac{3}{25} misses 1, which is 121^{2}.

Concept
Picking a number
Typical time
60 s
Your time
—
The rule this testsEqually likely outcomes
Practise this chapter →

Ten questions from Probability, at your own pace.

Practise this chapter →

Ten questions from Probability, at your own pace.