# NSTSE (National Science Talent Search Exam- Unified Council) Class 10: Questions 919 - 924 of 1484

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## Question number: 919

» Mathematics » Coordinate Geometry

### Question

Find the value of k if the area of triangle formed by is 13.5 sq units

### Choices

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

a. | 3 | |

b. | 4 or -4 | |

c. | 1 | |

d. | -2 or 2 |

## Question number: 920

### Question

One of the properties of Range is

### Choices

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

a. | It is not affected by greatest and least values | |

b. | Difference of greatest and least values | |

c. | Algebraic | |

d. | Not easy to calculate |

## Question number: 921

### Question

A ladder of 30 m long touches the wall at height of 15 m. The angle made by it by horizontal is ________.

### Choices

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

a. |
| |

b. |
| |

c. |
| |

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

## Question number: 922

### Question

Among 100 employees, the average salary of 99 is Rs. 100. The 100^{th} employee has the salary exceeds the average of 100 employees by Rs. 99 then average salary of all employees (in Rs. ) is

### Choices

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

a. | 99.50 | |

b. | 101 | |

c. | 100 | |

d. | 99 |

## Question number: 923

### Question

From a normal pack of cards, a card is drawn at random. The probability of getting a red ace is

### Choices

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

a. |
| |

b. |
| |

c. |
| |

d. | All of the above |

## Question number: 924

» Mathematics » Triangles

### Question

is an equilateral with side 9 cm. The perimeter of triangle formed by joining its mid-points is

### Choices

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

a. | 18.5 cm | |

b. | 27 cm | |

c. | 81 cm | |

d. | 13.5 cm |