# Choosing/Selecting/Picking a/Single/One item, product, article, page from two or more items, products, articles, pages

# Problem 1

A page from a book containing 100 pages is opened at random. Find the probability that a doublet is found on the page.

(Or)

A book has 100 pages. If a page is opened at random, find the probability for the page to have a two digit number with the same digitsSolution Ans :

9 |

100 |

# Problem 2

A page is randomly selected from a book of 88 pages, then find the probability that the sum of the digits of the page is 10.

Solution Ans :

1 |

11 |

# Problem 3

A box contains 400 bolts of which 20 are defective. Find the probability that a bolt chosen at random from the box is not defective.

Solution Ans :

19 |

20 |

# Problem 4

A lot consists of 12 good products, 6 with minor defects and 2 with major defects. A product is chosen at random. The probability that it is defective is

Solution Ans :

2 |

5 |

Author : The Edifier