# NSTSE (National Science Talent Search Exam- Unified Council) Class 6: Questions 800 - 810 of 2029

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## Question 800

## Question 801

### Question

MCQ▾If positive sign precedes a bracket the sign of the terms inside the bracket will ________when the bracket is removed.

### Choices

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

a. | 0 | |

b. | no change | |

c. | change | |

d. | None of the above |

## Question 802

### Question

MCQ▾The LCM of two numbers is X and their HCF is Y. So, the sum of two numbers is

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 803

### Question

MCQ▾Simplified value of

### Choices

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

a. | ||

b. | 4 | |

c. | ||

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

## Question 804

### Question

MCQ▾The number of prime numbers between 2 and 15 are

### Choices

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

a. | 6 | |

b. | 3 | |

c. | 5 | |

d. | 4 |

## Question 805

### Question

MCQ▾The addition of identity element

### Choices

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

a. | 0 | |

b. | 1 | |

c. | a | |

d. | -1 |

## Question 806

### Question

MCQ▾Predecessor of natural number 2

### Choices

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

a. | Does not exist | |

b. | 4 | |

c. | 2 | |

d. | 1 |

## Question 807

## Question 808

### Question

MCQ▾### Choices

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

a. | ||

b. | ||

c. | ||

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

## Question 809

## Question 810

### Question

MCQ▾Difference between a prime (18) and a composite (30) number is

### Choices

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

a. | 19 | |

b. | 23 | |

c. | 30 | |

d. | 12 |