A) 23 years | B) 25 years |

C) 33 years | D) 35 years |

Explanation:

Ayush's present age = 10 years.

His mother's present age = (10 + 20) years = 30 years.

Ayush's father's present age = (30 + 5) years = 35 years.

Ayush's father's age at the time of Ayush's birth = (35 - 10) years = 25 years.

Therefore Ayush's father's age at the time of marriage = (25 - 2) years = 23 years.

A) Congruent | B) Coplanar points |

C) Collinear points | D) None |

Explanation:

Points that lie on the same line are called Collinear points. And that points lie on the same plane are called Coplanar points.

A) Statistics | B) Data collection |

C) Probability | D) Systematic evaluation |

Explanation:

The process of collecting, organizing and analyzing data is called **Statistics.**

A) O(n2) | B) O(n log n) |

C) O(n) | D) O(log n) |

Explanation:

The worst case complexity of linear search is O(n).

A) TRUE | B) FALSE |

Explanation:

The given statement about similar triangles is TRUE.

**Similar Triangles Theorem ::** Similar triangles are two triangles with corresponding angles of equal measure, and the ratios of their corresponding sides' lengths are equal.

A) negative | B) positive |

C) zero | D) Can't be determined |

Explanation:

We know that a negative value plus a positive value always count backward and the sign depends on the bigger value sign.

When you are adding a negative number to a positive number, then the value counts backward and takes the sign of the biggest number.

**For example::**

Adding -5 and +2

-5 + 2 = -3 (big number is 5 and its sign is '-')

Adding -3 and +5

+5 + (-3) = 5 - 3 = +2(big number is 5 and it has sign '+').

A) 13 | B) 26 |

C) 39 | D) 52 |

Explanation:

The total cards in the deck are** 52**. These 52 cards are divided into 4 suits of 13 cards in each suit. Two Red suits and Two black suits.

**Red suits ::** Heart suit and Diamond suit **= 26**

**Black suits ::** Spade suit and Club suit **= 26.**