# NSTSE (National Science Talent Search Exam- Unified Council) Class 4: Questions 682 - 690 of 1971

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## Question number: 682

» Mathematics » Multiples and Factors

### Question

The sum of digits is divisible by 9, the number is:

### Choices

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

a. | 256 | |

b. | 300 | |

c. | 279 | |

d. | 164 |

## Question number: 683

» Mathematics » Multiples and Factors

### Question

The unique number is:

### Choices

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

a. | 1 | |

b. | 2 | |

c. | 3 | |

d. | 0 |

## Question number: 684

» Mathematics » Multiples and Factors

### Question

41 and 51 are ________ numbers.

### Choices

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

a. | Composite | |

b. | Twin prime | |

c. | Co-prime | |

d. | Prime |

## Question number: 685

» Mathematics » Fractions

### Question

Two fractions are equivalent if their cross multiplications are:

### Choices

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

a. | 1 | |

b. | Not equal | |

c. | Equal | |

d. | 0 |

## Question number: 686

» Mathematics » Fractions

### Question

Three–sixths of 12 litres ________ litres

### Choices

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

a. | 8 | |

b. | 2 | |

c. | 4 | |

d. | 6 |

## Question number: 687

» Mathematics » Multiples and Factors

### Question

________ is the smallest prime number.

### Choices

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

a. | 1 | |

b. | 5 | |

c. | 4 | |

d. | 2 |

## Question number: 688

» Mathematics » Multiplication and Division

### Question

The exact value of euro compared to the Indian rupee changes from day to day. On a given day, Rs. 216 was worth 4 euros. How many euros would Rs. 324 have been worth on that day?

### Choices

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

a. | 8 | |

b. | 6 | |

c. | 10 | |

d. | 11 |

## Question number: 689

» Mathematics » Multiplication and Division

### Question

Answer is incorrect due to a mistake in one of the digits in the calculation step. The incorrect digit is:

### Choices

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

a. | 0 | |

b. | 5 | |

c. | 1 | |

d. | 6 |

## Question number: 690

» Mathematics » Multiples and Factors

### Question

A number which when divided by 2, leaves zero as remainder, is ________ number.

### Choices

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

a. | Odd | |

b. | Even | |

c. | Twin prime | |

d. | Prime |