# NSTSE (National Science Talent Search Exam- Unified Council) Class 7: Questions 642 - 649 of 1732

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## Question 642

### Question

MCQ▾By selling 50 mangoes for ₹ 45, a man loses 20 % . How many should he sell for ₹ 27 so as to gain 20 % in the transaction?

### Choices

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

a. | 22 | |

b. | 20 | |

c. | 24 | |

d. | 30 |

## Question 643

## Question 644

### Question

MCQ▾What fractions of the children in the following group are girls?

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 645

### Question

MCQ▾In the figure given below, find .

### Choices

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

a. | ||

b. | ||

c. | ||

d. | All of the above |

## Question 646

### Question

MCQ▾Which of the following rational numbers is in the standard form?

### Choices

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

a. | ||

b. | ||

c. | ||

d. | None of the above |

## Question 647

### Question

MCQ▾is a ________.

### Choices

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

a. | Either positive or negative rational number | |

b. | Positive rational number | |

c. | Neither positive nor negative rational number | |

d. | Negative rational number |

## Question 648

### Question

MCQ▾In the adjoining figure, it is given that , t is a transversal. Then the value of x is

### Choices

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

a. | ||

b. | ||

c. | ||

d. | None of the above |

## Question 649

### Question

MCQ▾Negative of a negative integer is

### Choices

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

a. | Zero | |

b. | Positive | |

c. | Negative | |

d. | None of the above |