# NCO- Cyber Olympiad (SOF) Class 12: Questions 387 - 393 of 520

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## Question 387

## Question 388

## Question 389

### Question

MCQ▾12 year old Sitara is three times as old as her brother Devin. How old will Sitara be when she is twice as old as Devin?

### Choices

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

a. | 14 years | |

b. | 16 years | |

c. | 18 years | |

d. | 20 years |

## Question 390

## Question 391

### Question

MCQ▾If the following words are arranged as found in the dictionary, then what will be the fourth letter from the left in the word?

### Choices

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

a. | T | |

b. | O | |

c. | R | |

d. | I |

## Question 392

### Question

MCQ▾What is this given program used for?

### Choices

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

a. | To print the number of digits in a number entered by the user. | |

b. | To check for Armstrong number. | |

c. | To print the first n terms of the Fibonacci series. | |

d. | To print the factorial of the number. |

## Question 393

Appeared in Year: *2014*

### Question

MCQ▾In the following questions, two rows of number are given. The resultant number in each row is to be worked out separately based on the following rules and the question below the rows of numbers is to be answered. The operations of numbers progress from the left to the right. (SET-B)

Rules:

(i) If an odd number is followed by another composite odd number, they are to be added.

(ii) If an even number is followed by an odd number they are to be added.

(iii) If an even number is followed by a number which is the perfect square, the even number is to be subtracted from the perfect square.

(iv) If an odd number is followed by a prime odd number, the first number is to be divided by the second number.

If is the resultant of first row, what is the resultant of second row?

### Choices

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

a. | 32 | |

b. | 36 | |

c. | ||

d. |