Multiple choice

How many favourable outcomes are there for picking a black marble from a jar containing 12 white, 10 grey and 20 black marbles?

  1. 10

  2. 12

  3. 20

  4. 22
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The jar contains 12 white, 10 grey, and 20 black marbles. The number of favourable outcomes for picking a black marble is simply the number of black marbles, which is 20.

AI explanation

Favorable outcomes correspond directly to the number of successful items available for the given condition. Since the jar contains exactly 20 black marbles, there are exactly 20 favorable outcomes for picking a black marble.

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