# IMO Level 1- Mathematics Olympiad (SOF) Class 7: Questions 1013 - 1020 of 1022

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## Question 1013

### Question

MCQ▾The mean of 7 numbers is 40. If one number is included, mean of the numbers becomes 50, and then the included number is________.

### Choices

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

a. | 120 | |

b. | 140 | |

c. | 150 | |

d. | 130 |

## Question 1014

### Question

MCQ▾Which letter of the English alphabet has reflection symmetry about vertical mirrors?

### Choices

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

a. | H | |

b. | N | |

c. | Z | |

d. | B |

## Question 1015

### Question

MCQ▾The average of the two middle rational numbers if are arranged in descending order is ________

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 1016

## Question 1017

### Question

MCQ▾What fraction of the figure is shaded?

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 1018

### Question

MCQ▾If the area of a trangle with base 2x is equal to the area of a square with side 2x, then the altitude of the triangle is ________.

### Choices

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

a. | 4x | |

b. | ||

c. | 3x | |

d. | 2x |

## Question 1019

### Question

MCQ▾Salary of a professor increases every year by 10 % . His salary in the year 2011 was ₹ 88000. Find his original slary.

### Choices

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

a. | ₹ 80,000 | |

b. | ₹ 90,008 | |

c. | ₹ 88,000 | |

d. | ₹ 79,508 |

## Question 1020

### Question

MCQ▾Shreya answered of the questions on her quiz correctly. What percent of the questions did she answer correctly?

### Choices

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

a. | 75 % | |

b. | 25 % | |

c. | 40 % | |

d. | 50 % |