# Mathematics-Statistics [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 1 - 9 of 83

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## Question 1

### Question

MCQ▾The arithmetic mean of first six natural numbers is

### Choices

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

a. | 3 | |

b. | 28 | |

c. | 4 | |

d. | 7 |

## Question 2

### Question

MCQ▾The average weight of sample of 6 Oranges is 30 g. Later it was found that the weighing machine had shown the weight of each Orange 5 g less. The correct average weight of an Orange is

### Choices

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

a. | 75 g | |

b. | 35 g | |

c. | 55 g | |

d. | 40 g |

## Question 3

### Question

MCQ▾The mean of 7 observations is 58. If one observation, namely 4 is deleted, the new mean is

### Choices

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

a. | 61 | |

b. | 62 | |

c. | 65 | |

d. | 67 |

## Question 4

### Question

MCQ▾The runs scored by Sachin in 7 test matches are 133,140,138,150,156,148 and 143 respectively. Find his mean.

### Choices

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

a. | 144 | |

b. | 133 | |

c. | 156 | |

d. | 148 |

## Question 5

### Question

MCQ▾The runs scored by Mahi in 5 test matches are 150,163,158,160 and 164 respectively. Find his mean.

### Choices

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

a. | 164 | |

b. | 158 | |

c. | 150 | |

d. | 159 |

## Question 6

## Question 7

## Question 8

## Question 9

### Question

MCQ▾The price (in Rs. ) of 7 Pens are 15,21,14,25,28,19,31. The median is

### Choices

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

a. | 25 | |

b. | 19 | |

c. | 31 | |

d. | 21 |