# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 30 - 35 of 1022

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## Question 30

### Question

MCQ▾Which of the following statements is true?

### Choices

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

a. | is a rational number | |

b. | Irrational number is not written in ration form | |

c. | 2 is a prime number | |

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

## Question 31

### Question

MCQ▾Which of the following number sentence below best describes the problem shown on the number line?

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 32

### Question

MCQ▾In a magic square each row, column and diagonal have the same sum, then the values of A and B are respectively________.

1 | -10 | 0 |

A | -3 | -2 |

-6 | 4 | B |

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 33

### Question

MCQ▾An insect crawls up 7 cm every second on an 80 cm vertical rod and then falls down 3 cm over the next second. How many seconds will it take to climb the rod?

### Choices

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

a. | 30 seconds | |

b. | 20 seconds | |

c. | 60 seconds | |

d. | 39 seconds |

## Question 34

### Question

MCQ▾Which of the following statements is true?

### Choices

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

a. | The product of two rational numbers is a rational number | |

b. | Zero has no reciprocal | |

c. | 1 and -1 are reciprocal of themselves | |

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

## Question 35

### Question

MCQ▾The product of two rational numbers is. If one of the numbers is , then the other number is________.

### Choices

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

a. | 22 | |

b. | 36 | |

c. | 49 | |

d. | 27 |