# NSTSE (National Science Talent Search Exam- Unified Council) Class 7: Questions 1168 - 1172 of 1732

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## Question number: 1168

» Mathematics » Algebraic Expressions

### Question

In , the value of ‘a’ is

### Choices

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

a. | + 2 | |

b. | 0 | |

c. | - 2 | |

d. | + 1 |

## Question number: 1169

### Question

The mean of 6 observations is 28. If one observation, namely 8 is deleted, the new mean is

### Choices

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

a. | 52 | |

b. | 43 | |

c. | 25 | |

d. | 32 |

## Question number: 1170

» Mathematics » Perimeter and Area

### Question

The area of a triangular field is 0.5 hectares. If its altitude is 50 m, find the corresponding base.

### Choices

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

a. | 200 cm | |

b. | 25 m | |

c. | 200 m | |

d. | All of the above |

## Question number: 1171

» Mathematics » Symmetry

### Question

A regular hexagon has ________

### Choices

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

a. | One line of symmetry | |

b. | No lines of symmetry | |

c. | Three lines of symmetry | |

d. | Six lines of symmetry |

## Question number: 1172

» Mathematics » Visualizing Solid Shapes

### Question

Which of the following is different from the other three?

### Choices

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

a. | ||

b. | ||

c. | ||

d. |