# Numbers Questions

A) 32761 | B) 42437 |

C) 81225 | D) 20164 |

Explanation:

The square of a natural number never ends in 7.

42437 is not the square of a natural number

A) 4 | B) 3 |

C) 2 | D) 1 |

Explanation:

6)4456(742

42

--------

25

24

-------

16

12

-----

4

------

Required number = (6-4) = 2.

A) 3 | B) 2 |

C) 1 | D) 0 |

Explanation:

Let n=4*q + 3. Then, 2*n = 8*q + 6 = 4(2*q + 1) + 2.

Thus when 2*n is divided by 4, the reminder is 2.

A) 1155 | B) 1145 |

C) 1040 | D) None |

Explanation:

The weight will be 250g plus (1.55 - 0.65)/0.10 units of 100g

250 + 900 = 1150

This is the maximum weight that can be sent at that price. But, weights exceeding

250 + 800 will also get charged this amount (that is what the ‘part thereof’ implies).

Hence a package weighing 1145 will be charged $1145

A) decrease | B) stay the same |

C) increase four fold | D) increase to more than double |

Explanation:

The best approach is to pick a number that satisfies the rules that x and y are greater than 0. So for example you could choose 25 for y.

The value of x before doubling is then 25 - 50/25 = 23

The value after doubling y will be 50 - 50/50 = 49, which is more than double.