# IMO- Mathematics Olympiad Class 6: Questions 185 - 190 of 1049

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## Question number: 185

### Question

Product of two integer is If one of the integers is , then the other is

### Choices

Choice (4) | Response | |
---|---|---|

a. | 19 | |

b. | 1 | |

c. | 0 | |

d. | -9 |

## Question number: 186

### Question

Observe the following patterns. Then find the sum of .

………………………………………………………. ……………………………………………………….

### Choices

Choice (4) | Response | |
---|---|---|

a. | 150 | |

b. | 320 | |

c. | 180 | |

d. | 200 |

## Question number: 187

### Question

The expression is equivalent to , uses the ________ property.

### Choices

Choice (4) | Response | |
---|---|---|

a. | Associative | |

b. | Closure | |

c. | Identity | |

d. | Commutative |

## Question number: 188

### Question

Multiply the unit’s place of the number obtained by reversing the digits of the number 78923 with the hundred’s place of the number obtained by interchanging the digits in the unit’s place and the thousand’s place of the same number, we get________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 54 | |

b. | 64 | |

c. | 16 | |

d. | 63 |

## Question number: 189

### Question

A number is always divisible by 60 if

### Choices

Choice (4) | Response | |
---|---|---|

a. | It is divisible by both 6 and 10 | |

b. | It is divisible by both 2 and 30 | |

c. | It is divisible by both 4 and 15 | |

d. | All a. , b. and c. are correct |

## Question number: 190

### Question

Subtract the number obtained by reversing the digits of the number 20198 from the number obtained by interchanging the digits in the unit’s place and the hundred’s place of the same number, we get________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 77121 | |

b. | - 68229 | |

c. | 68004 | |

d. | - 68211 |