**Q15.** (5 + 14 + 23 + 32 + ... + 113) = ?

A. 767 |
B. 654 |

C. 889 |
D. 952 |

**Q16.** What must least number be added from 2010 to obtain a number which is wholly divisible by 19?

A. 6 |
B. 5 |

C. 4 |
D. 7 |

**Q17.** How many natural numbers between 11 and 99 are divisible by 7?

A. 15 |
B. 12 |

C. 14 |
D. 13 |

**Q18.** On dividing an individual number by 342, we get 47 as remainder. If the same number is divided by 18, what will be the remainder?

A. 19 |
B. 15 |

C. 13 |
D. 11 |

**Q19.** Find the sum (3 + 3^{2} + 3^{3} + 3^{4} + ... + 3^{9})

A. 29523 |
B. 88572 |

C. 9840 |
D. 3279 |

**Q20.** What is the sum of all even natural numbers less than 87?

A. 1640 |
B. 1806 |

C. 1892 |
D. 1980 |

**Q21.** Simplify: = ?

A. 330 |
B. 320 |

C. 325 |
D. 350 |