# Number Systems (IMO- Mathematics Olympiad Class 6): Questions 23 - 29 of 82

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## Question number: 23

» Number Systems

### Question

What is the inverse property of multiplication and addition respectively ________

### Choices

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

a. | 0, 1 | |

b. | 1, 0 | |

c. | All of the above | |

d. | Question does not provide sufficient data or is vague |

## Question number: 24

» Number Systems

### Question

Which of the following statement is true?

Statement I: Every integer is a whole number

Statement II: Every rational number is a whole number

### Choices

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

a. | I and II true | |

b. | II true | |

c. | I true, | |

d. | I and II false |

## Question number: 25

» Number Systems

### Question

The number with which 143 is added so that the sum remains the same is ________

### Choices

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

a. | 0 | |

b. | 43 | |

c. | 143 | |

d. | 1 |

## Question number: 26

» Number Systems

### Question

Difference between the face value of 8 and 5 in 26, 248 and 76, 542 is

### Choices

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

a. | 3 | |

b. | 442 | |

c. | 805 | |

d. | Question does not provide sufficient data or is vague |

## Question number: 27

» Number Systems

### Question

Sum of face value of 9 and 4 in 2, 59, 570 and 7, 34, 256 is

### Choices

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

a. | 13000 | |

b. | 13 | |

c. | 5 | |

d. | 5000 |

## Question number: 28

» Number Systems

### Question

If are two whole numbers, then commutative law is applicable to addition if

### Choices

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

a. |
| |

b. |
| |

c. |
| |

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

## Question number: 29

» Number Systems

### Question

Which of the following statement is true?

### Choices

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

a. | Every natural number is a whole number | |

b. | 1 is the least whole number | |

c. | Every whole number is a natural number | |

d. | 99 is the largest whole number |