# Mathematics-Playing With Numbers (NSTSE Class 6): Questions 23 - 31 of 83

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## Question number: 23

» Mathematics » Playing With Numbers

### Question

Number of prime numbers between 70 to 110 is

### Choices

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

a. | 12 | |

b. | 9 | |

c. | 7 | |

d. | 10 |

## Question number: 24

» Mathematics » Playing With Numbers

### Question

Numbers of prime numbers from 1 to 100 are

### Choices

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

a. | 25 | |

b. | 20 | |

c. | 15 | |

d. | 18 |

## Question number: 25

» Mathematics » Playing With Numbers

### Question

An odd number has ________

### Choices

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

a. | 1, 3, 5, 7 or 9 at one’s place | |

b. | 2 factor only | |

c. | 2 multiplies only | |

d. | 0, 2, 4, 6 or 8 at one’s place |

## Question number: 26

» Mathematics » Playing With Numbers

### Question

The number 36 has________

### Choices

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

a. | 6 factors | |

b. | 4 factors | |

c. | 3 factors | |

d. | 9 factors |

## Question number: 27

» Mathematics » Playing With Numbers

### Question

Example of an odd number from the following is

### Choices

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

a. | 54658 | |

b. | 875674 | |

c. | 32444 | |

d. | 35467 |

## Question number: 28

» Mathematics » Playing With Numbers

### Question

By gold Bach’s conjecture, every odd number greater than 5 can be expressed as a sum of

### Choices

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

a. | Two odd prime number | |

b. | Two composite number | |

c. | Three primes | |

d. | Two co-prime number |

## Question number: 29

» Mathematics » Playing With Numbers

### Question

Which of the following are prime numbers?

### Choices

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

a. | 124 | |

b. | 198 | |

c. | 197 | |

d. | All of the above |

## Question number: 30

» Mathematics » Playing With Numbers

### Question

Every number is a factor of zero (0) =

### Choices

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

a. | 1 | |

b. | 0 | |

c. | 2 | |

d. | None of the above |

## Question number: 31

» Mathematics » Playing With Numbers

### Question

Brijesh wrote two digits of a 3-digit number on the blackboard as shown below. Find the missing digit if it has 11 and 13 as factors?

2 | ? | 1 |

### Choices

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

a. | 3 | |

b. | 4 | |

c. | 2 | |

d. | 8 |