#
CAT Questions

77
1558

Q:

A) 105 | B) 7! x 6! |

C) 7!/5! | D) 420 |

Answer & Explanation
Answer: A) 105

Explanation:

Explanation:

Choose 1 person for the single room & from the remaining choose 2 for the double room & from the remaining choose 4 people for the four person room,

Then,

^{7}C_{1 }x^{6}C_{2 }x^{4}C_{4 }_{ = 7 x x 1 }

_{ = 7 x 15 = 105.}

4
1286

Q:

A) 961 x 861 | B) 961 x 961 |

C) 961 x 2 | D) 29791 |

6
1067

Q:

A) Rs. 4000 | B) Rs. 6000 |

C) Rs. 9000 | D) Rs. 3000 |

Answer & Explanation
Answer: A) Rs. 4000

Explanation:

Explanation:

Given ratio of initial investments = = 105 : 40 : 36.

Let the initial investments be 105x, 40x and 36x.

=

= 1680x : 480x : 432x = 35 : 10 : 9.

Hence, B's share = = Rs. 4000.

5
1050

Q:

A) Rs. 100 | B) Rs. 105 |

C) Rs. 115 | D) Rs. 110 |

9
958