# Aptitude Questions

Number System Aptitude Questions

Number System is an important topic in the Quantitative Aptitude section of the Wipro Aptitude exam. The important topics under this section are Face value, Place value, Various types of numbers, Divisibility rules followed by some formulas.

We have solved 20 questions of different levels corresponding to all the topics. It's always advisable to improve accuracy and speed so that you can attempt maximum no of questions within the limited time frame. If you are already thorough with all the concepts of quantitative aptitude then move on to reasoning ability and verbal ability.

**Shortcut tricks to solve the number system questions:**

Number System | Tricks |

Sum of first n natural numbers | n(n+1)/2 |

Sum of square of first n natural numbers | n(n+1)(2n+1)/6 |

Sum of cubes of first n natural numbers | (n(n+1)/2)^{2} |

Sum of first n odd numbers | n^{2} |

Sum of first n even numbers | n(n+1) |

Divisibility Rules: | |

A number divisible by 2 | if it ends with 0,2,4,6,8 |

A number divisible by 3 | if the sum of its digits is divisible by 3 |

A number divisible by 4 | If last two digit divisible by 4 |

For your convenience, we have provided solutions. So, if your answer is incorrect you can see the correct answer and explanation for your convenience. All the best for your Exam!

When you have completed this section go to L.C.M and H.C.F .