# Mental Ability-Basic Arithmetic (NCO- Cyber Olympiad Class 7): Questions 91 - 98 of 122

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## Question number: 91

» Mental Ability » Basic Arithmetic

### Question

Express the 12 % as a decimal

### Choices

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

a. | 0.12 | |

b. | 0.012 | |

c. | 12 | |

d. | 0.0012 |

## Question number: 92

» Mental Ability » Basic Arithmetic

### Question

The value of is

### Choices

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

a. | 44 | |

b. | 15 | |

c. | 35 | |

d. | 10 |

## Question number: 93

» Mental Ability » Basic Arithmetic

### Question

If 12 men working 5 hours a day can do a piece of work in 5 days; in how days will 10 men working for 3 hours a day to do the same piece of work?

### Choices

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

a. | 11.66 days | |

b. | 30 days | |

c. | 10 days | |

d. | 55 days |

## Question number: 94

» Mental Ability » Basic Arithmetic

### Question

If , find the value of x.

### Choices

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

a. | 62 | |

b. | 68 | |

c. | 58 | |

d. | 26 |

## Question number: 95

» Mental Ability » Basic Arithmetic

### Question

Human blood RBC’s are expressed in terms of number of red blood cells per cubic mm. Express 5.5 million blood cells per cubic mm terms of scientific notation.

### Choices

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

a. | 55 | |

b. | 5.5 | |

c. | 5.5 | |

d. | 0.55 |

## Question number: 96

» Mental Ability » Basic Arithmetic

### Question

A train 500 meters long is running at a speed of 48 . If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is.

### Choices

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

a. | 130 | |

b. | 500 | |

c. | 300 | |

d. | 100 |

## Question number: 97

» Mental Ability » Basic Arithmetic

### Question

Find the value of from the equation

### Choices

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

a. | 62 | |

b. | 35 | |

c. | 45 | |

d. | 33 |

## Question number: 98

» Mental Ability » Basic Arithmetic

### Question

A man sold a radio for 1220 and gained 20%, then the radio was bought for?

### Choices

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

a. | 1016.66 | |

b. | 1200 | |

c. | 980 | |

d. | 1790 |