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) 4 | B) 3 |

C) 2 | D) 1 |

A) 1 | B) 0 |

C) 9 | D) None |

Explanation:

3 divided by 1/3

=> $\frac{3}{{\displaystyle \frac{1}{3}}}$

= 3 x 3/1

**= 9**

A) 2.741 kgs | B) 2.956 kgs |

C) 3.418 kgs | D) 3.785 kgs |

Explanation:

**1 Gallon = 3.785 kgs**

Gallon is a unit of measurement of liquid.

We know that 1 gallon = 3.785 liters

But we know that,

1 cubic meter = 1000 lit or 1000 kgs

=> 1 lit = 1 kg

Hence, **1 gallon = 3.785 lit = 3.785 kgs.**

A) 0 | B) 1 |

C) Undefined | D) Indeterminate |

Explanation:

**Indeterminate are those,which mathematics can’t determine.**

Because we don’t actually know which one is the exact answer for this due to having lots of results for this.

**Explanation::**

- Let us think by this analogy that,

0 / 1 = 0

0 / 2 = 0

…………

………..

we can say **0 / n = 0** from this we can write, **0/0 = 0**

- Again, another analogy,(
**from limiting concept of 1/0 = infinity**)

1 / 0 = +*∞* or -*∞*

2 /0 = +*∞* or -*∞*

………

.…….

we can say **0 / 0 = ***∞*

- Again, another analogy,

1 / 1 = 1

2/2 = 1

.……..

………..

we can say, **0/0 = 1**

Now, you see it’s confusing. ** Every analog is mathematically correct then which one is the right answer for 0/0. Therefore Mathematics can’t determine this fact**.

*So, 0/0 is indeterminate.*

A) 144 | B) 72 |

C) 306 | D) All the above |

Explanation:

The **Multiples** of **18 **are 18, 36, 54, 72, 90, 108, 126, ....

- Multiples of 18 are nothing but numbers which are divisible by 18 leaving remainder 0.

- An infinite number of multiples of 18 can be achieved by adding 18 to each subsequent multiple.

A) 33 | B) 24 |

C) 54 | D) 41 |

Explanation:

We can get this by any of two explanations.

**Answer 1**: 41

7 = 3 + 4 = 34

Similarly, 5 = 4 + 1 = 41

**Answer 2** : 41

7 - 3 = 4 => 34

Similarly, 5 - 4 = 1 => 41

A) 3.214 | B) 3.28084 |

C) 3.2516 | D) 3.21456 |

Explanation:

We know that,

1 meter = 100 cms.

=> **1 meter = 3.28084 feet.**