# Mental Ability-Basic Arithmetic [NCO- Cyber Olympiad (SOF) Class 10]: Questions 1 - 5 of 67

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## Question 1

### Question

MCQ▾In the given question, some relationships have been expressed through symbols as defined below:

Mark the option which gives the correct relationship.

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 2

### Question

MCQ▾20 liters of a mixture contains 10 % water and the rest orange juice. If 3 liters of orange juice be mixed in it, the percentage of water in the new mixture will be

### Choices

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

a. | 20 % | |

b. | % | |

c. | ||

d. |

## Question 3

### Question

MCQ▾Six years hence a man՚s age will be three times his son՚s age and six years ago he was seven times as old as his son. The present ages of the man and his son respectively are.

### Choices

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

a. | 48,12 | |

b. | 64,20 | |

c. | 42,16 | |

d. | 40,10 |

## Question 4

### Question

MCQ▾A bus for Mumbai leaves every forty minutes from a bus stand. An enquiry clerk told a passenger that the bus had already left ten minutes ago and the next bus will leave at 10: 50 a. m. At what time did the enquiry clerk give this information to the passenger?

### Choices

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

a. | 9: 55 a. m. | |

b. | 10: 20 a. m. | |

c. | 10: 25 a. m. | |

d. | 10: 10 a. m. |

## Question 5

### Question

MCQ▾Two girls agree to go on a road trip together. They travel km on the first day. On the second day they travel 5 km more than half of the distance they travelled on the first day. On the third day they drove 4 times as far as they did on the second day. If they drove a total of 12,000 km, the value of x is

### Choices

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

a. | 3588 | |

b. | 1196 | |

c. | 4784 | |

d. | 2392 |