# Mathematics-Comparing Quantities [NSTSE (National Science Talent Search Exam- Unified Council) Class 7]: Questions 1 - 9 of 134

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## Question 1

### Question

MCQ▾First, second and third terms of a proportion are 5,30 and 20. Then fourth term is

### Choices

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

a. | 80 | |

b. | 60 | |

c. | 30 | |

d. | 120 |

## Question 2

### Question

MCQ▾In the given proportion 2: 3: : 24: 36 extremes are

### Choices

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

a. | 3,24 | |

b. | 2,36 | |

c. | 3,36 | |

d. | 2,24 |

## Question 3

### Question

MCQ▾The ratio of the heights of A and B is 5: 7. If B is 2.1 m tall, then the height of A is

### Choices

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

a. | 1.5 m | |

b. | 0.3 m | |

c. | 1.8 m | |

d. | 2.8 m |

## Question 4

### Question

MCQ▾Are they in proportion 8: 2 and 4: 16?

### Choices

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

a. | No | |

b. | Yes | |

c. | Sometimes | |

d. | None of the above |

## Question 5

### Question

MCQ▾Ratio symbol is ________ and is read as ________.

### Choices

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

a. | =, equal to | |

b. | : , is to | |

c. | : : , equal to | |

d. | None of the above |

## Question 6

### Question

MCQ▾For 20: 10: : 10: 5, the mean proportion is

### Choices

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

a. | 10 | |

b. | 100 | |

c. | 5 | |

d. | 20 |

## Question 7

### Question

MCQ▾When a number is reduced by 14, it becomes 30 % of itself. Find the number.

### Choices

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

a. | 70 | |

b. | 20 | |

c. | 30 | |

d. | 60 |

## Question 8

### Question

MCQ▾The ratio of the least prime number to the least composite number is

### Choices

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

a. | 1: 3 | |

b. | 1: 4 | |

c. | 1: 2 | |

d. | 2: 3 |

## Question 9

### Question

MCQ▾The length and width of a tape are 3 m and 27 cm. Write their ratio.

### Choices

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

a. | 10: 9 | |

b. | 100: 9 | |

c. | 9: 10 | |

d. | 9: 100 |