26:

What is the greatest number consisting of six digits which on being divided by 6, 7, 8, 9, 10 leaves 4, 5, 6, 7, 8 as remainders respectively?

A. | 997920 |

B. | 997918 |

C. | 999999 |

D. | 997922 |

6 - 4 = 2, 7 - 5 = 2, 8 - 6 = 2, 9 - 7 = 2, 10 -8 = 2 |

27:

There are N questions in an exam.

For i= 1, 2,..... N ,

there are 2N-1 students who answered i or more questions wrongly. If total number of wrong answers is 8191, N then will be

A. | 12 |

B. | 11 |

C. | 10 |

D. | 13 |

Number of students who answered 1 or more questions wrongly = 2 |

28:

In an election for the President, if 261 valid votes are cast, for the 5 contestants then least number of votes a candidate requires to receive to win the election are

A. | 53 |

B. | 54 |

C. | 257 |

D. | 72 |

Worst scenario is when other four get equal number of votes. |

29:

If 7x + 6y = 420, x and y are natural numbers, then what can be said about x?

A. | x is always odd |

B. | x is always even. |

C. | x is even only if y is odd. |

D. | x is odd if y is even. |

7x + 6y = 420 |

30:

Two new charity organizations C_{1} and C_{2} were formed, with x members each, on January 1, 2012. On first day of each, subsequent month, in C_{1}, number of members increases by a certain number a, while in C_{2}, number of members increases in such a way that ratio of the number of members in a month to the preceding month bear a ratio equal to b. On May 1, 2012, both organizations had the same number of members. If a = 20x, then b will be

A. | 2 |

B. | 3 |

C. | 2.5 |

D. | 3.5 |

Number of members in C |

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