# Mental Ability [NCO- Cyber Olympiad (SOF) Class 10]: Questions 1 - 6 of 198

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## Question 1

### Question

MCQ▾The Volume of a solid metallic sphere is 2512 . It is melted and recast into solid right circular cones of radius 5 cm and height 16 cm. Calculate the number of cones recast.

### Choices

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

a. | 9 | |

b. | 6 | |

c. | 8 | |

d. | 7 |

## Question 2

### Question

MCQ▾If , which expression is equivalent to ?

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 3

### Question

MCQ▾If Tuesday falls on 25^{th} December 1990, what day will be on 25^{th} December 1992?

### Choices

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

a. | Monday | |

b. | Sunday | |

c. | Tuesday | |

d. | Friday |

## Question 4

### Question

MCQ▾Find the mean marks of students from the following cumulative frequency table:

Marks | Number of Students |

0 and above 10 and above 20 and above 30 and above 40 and above 50 and above 60 and above 70 and above 80 and above 90 and above 100 and above | 80 76 71 65 58 50 41 31 20 8 0 |

### Choices

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

a. | 78.9 | |

b. | 54.6 | |

c. | 62.5 | |

d. | 57.5 |

## Question 5

### Question

MCQ▾Indicate in which one of the following equations x is neither directly nor inversely proportional to y.

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 6

### Question

MCQ▾In the figure drawn below, and are parallel and . What is ?

### Choices

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

a. | ||

b. | ||

c. | ||

d. |