# 11plus Probability sample papers

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Two unbiased coins are tossed. What is the probability of getting at most one head?

1. 3/4 |

2. 1/2 |

3. 2/3 |

4. 3/2 |

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1. 1/2 |

2. 1/3 |

3. 1/4 |

4. 1/5 |

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A bag contains 4 red marbles, 5 green marbles and 6 blue marbles. A marble is drawn at random from the bag. What is the probability that the marble drawn is either red or green?

1. 3/5 |

2. 2/5 |

3. 7/15 |

4. 2/3 |

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If a card is drawn from a pack of 52 cards, what is the probability that is an ace?

1. 1/13 |

2. 1/52 |

3. 1/26 |

4. 1/3 |

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In a lottery, there are 35 tickets. Among which only 10 tickets contain prizes. A lottery is drawn at random. What is the probability of getting a prize?

1. 3/7 |

2. 2/7 |

3. 1/9 |

4. 2/3 |

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