# Mental Ability (NCO- Cyber Olympiad Class 6): Questions 28 - 36 of 394

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## Question number: 28

» Mental Ability » Basic Arithmetic

### Question

If , what is the value of ________?

### Choices

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

a. | 6 | |

b. | 14 | |

c. | 4 | |

d. | 8 |

## Question number: 29

» Mental Ability » Basic Arithmetic

### Question

Which of the following numbers is prime?

### Choices

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

a. | 4 | |

b. | 17 | |

c. | 1 | |

d. | 15 |

## Question number: 30

» Mental Ability » Basic Statistics

### Question

Find the mode for this set of numbers.

{5, 8, 4, 2, 3, 9, 1, 7, 9}

### Choices

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

a. | 24 | |

b. | 9 | |

c. | 7 | |

d. | 3 |

## Question number: 31

» Mental Ability » Basic Arithmetic

### Question

A tank contains 1500 liter water. If 750 liters from that water transferred into another tank then the percentage of water left in the first tank is ________.

### Choices

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

a. | 50% | |

b. | 85% | |

c. | 70% | |

d. | 45% |

## Question number: 32

» Mental Ability » Basic Arithmetic

### Question

From 6 to 39, how many numbers are divisible by 3 or 5?

### Choices

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

a. | 10 | |

b. | 16 | |

c. | 12 | |

d. | None of the above |

## Question number: 33

» Mental Ability » Number Games » Number Series

### Question

In the given series find the number in place of? .

15, 18, 13, 16, 11, ?

### Choices

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

a. | 7 | |

b. | 15 | |

c. | 18 | |

d. | 14 |

## Question number: 34

» Mental Ability » Basic Arithmetic

### Question

The product of two numbers is 3000. If the H. C. F. of the numbers is 10, then L. C. M. will be ________.

### Choices

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

a. | 5 | |

b. | 30 | |

c. | 305 | |

d. | 300 |

## Question number: 35

» Mental Ability » Basic Arithmetic

### Question

One man sells 15 ball pens. If the selling price of ball pens is same as the cost price of 18 books then he will get profit or loss?

### Choices

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

a. | 20% | |

b. | 25.7% | |

c. | 13.5% | |

d. | 30% |

## Question number: 36

» Mental Ability » Ranking Test

### Question

If all even numbers from 78 to 90 are arranged in descending order from bottom to top, which number will be at 6 ^{th} place from the bottom?

### Choices

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

a. | 90 | |

b. | 88 | |

c. | 80 | |

d. | 86 |