# Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad (SOF) Class 7): Questions 1 - 7 of 122

Access detailed explanations (illustrated with images and videos) to **417** questions. Access all new questions we will add tracking exam-pattern and syllabus changes. *Unlimited Access for Unlimited Time*!

View Sample Explanation or View Features.

Rs. 300.00 or

How to register?

## Question number: 1

» Mental Ability » Basic Arithmetic

### Question

A man sold a radio for Rs. 1800 and gained 15%. The radio was bought for

### Choices

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

a. | Rs. 1530 | |

b. | Rs. 1565.21 | |

c. | Rs. 2000 | |

d. | Rs. 1782 |

## Question number: 2

» Mental Ability » Basic Arithmetic

### Question

600 liters of milk is divided in two parts having ratio X: 35, if the first part is 400 liters, find x.

### Choices

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

a. | 50 | |

b. | 55 | |

c. | 70 | |

d. | 57 |

## Question number: 3

» Mental Ability » Basic Arithmetic

### Question

Find three numbers in the ratio 2: 3: 5 such that the sum of their squares is 608.

### Choices

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

a. | 6: 9: 15 | |

b. | 8: 12: 20 | |

c. | 16: 24: 40 | |

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

## Question number: 4

» Mental Ability » Basic Arithmetic

### Question

If = 3125, then n=?

### Choices

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

a. | 6 | |

b. | 2 | |

c. | 8 | |

d. | 20 |

## Question number: 5

» Mental Ability » Basic Arithmetic

### Question

In an examination, one should get 16 % of the maximum marks to pass. A student obtains 100 marks and declared failed by 32 marks. The maximum marks are

### Choices

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

a. | 1008 | |

b. | 640 | |

c. | 500 | |

d. | 825 |

## Question number: 6

» Mental Ability » Basic Arithmetic

### Question

Three friends divide rupees 300 among themselves in the ratio . The share of the first friend is________.

### Choices

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

a. | Rs. 192 | |

b. | Rs. 148 | |

c. | Rs. 288 | |

d. | Rs. 163.63 |

## Question number: 7

» Mental Ability » Basic Arithmetic

### Question

Find four numbers in the ratio 1: 2: 2: 4 such that the sum of their squares is 625.

### Choices

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

a. | 5 | |

b. | 4 | |

c. | 6 | |

d. | 2 |