# Mathematics (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 15 - 21 of 119

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## Question number: 15

» Mathematics » Statistics

### Question

Median of a data set is a number which has an equal number of observations below and above it. The median of the data 1, 9, 4, 3, 7, 6, 8, 8, 12, 15 is

### Choices

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

a. | 7.5 | |

b. | 8 | |

c. | 7 | |

d. | any number between 7 and 8 |

## Question number: 16

» Mathematics » Linear Equation

### Question

Rs. l and Rs. 5 coins are available (as many required). Find the smallest payments which cannot be made by these coins, if not more than 5 coins are allowed

### Choices

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

a. | 14 | |

b. | 18 | |

c. | 3 | |

d. | 12 |

## Question number: 17

» Mathematics » Basic Geometry

### Question

Which of the following polygons are uniquely determined when all the sides are given?

### Choices

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

a. | Quadrilateral | |

b. | Pentagon | |

c. | Triangle | |

d. | Hexagon |

## Question number: 18

» Mathematics » Basic Geometry

### Question

Suppose you walk from home to the bus stand at 4 km/h and immediately return at x km/h. If the average speed is 6 km/h then x is

### Choices

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

a. | 12 km/h | |

b. | 8 km/h | |

c. | Cannot be determined unless the distance from home to bus stand is known. | |

d. | 10 km/h |

## Question number: 19

» Mathematics » Algebraic Expressions

### Question

(a - b) 2 + (b - a) 2 i s

### Choices

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

a. | Never zero | |

b. | Positive only if | |

c. | Always zero | |

d. | Positive if and only if |

## Question number: 20

» Mathematics » Basic Geometry

### Question

If one angle of a regular polygon be , then number of sides of the polygon is

### Choices

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

a. | 24 | |

b. | 27 | |

c. | 36 | |

d. | 6 |

## Question number: 21

» Mathematics » Exponents

### Question

The unit digit in the product of is

### Choices

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

a. | 9 | |

b. | 3 | |

c. | 5 | |

d. | 7 |