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) secant | B) tangent |

C) diameter | D) perigram |

Explanation:

A straight line segment whose endpoints both lie on the circle is called as chord. A chord that passes through the center of a circle is a diameter.

A) 50.08 x 10^3 kms | B) 5.008 x 10^-3 kms |

C) 5.008 x 10^3 kms | D) 500.8 x 10^3 kms |

A) 37804 | B) 2015736 |

C) 36718 | D) 53810 |

Explanation:

Divisibility rule for 24 is the number should be divisible by 3 and 8. As we know that 24 = 3 x 8

Now,

**Divisibility rule for 3 :**

If the sum of the digits of a number is divisible by 3, then the number is divisible by 3.

**Divisibility rule for 8 :**

The last three digits of a number should be divisible by 8.

Hence, check for the given options,

A) 37804 => 804 is not divible by 8.

C) 36718 => 718 is not divible by 8.

D) 53810 => 810 is not divible by 8.

B) 2015736 => 736 is divisble by 8 and sum 2 + 0 + 1 + 5 + 7 + 3 + 6 = 24 which is divisible by 3.

Hence, **2015736 is divisible by 24.**

A) even | B) odd |

C) 0 | D) none |

Explanation:

To find the sum of first 10 prime numbers

First 10 prime numbers = 2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Hence, The sum of the first 10 prime numbers is

(2+3+5+7+11+13+17+19+23+29) = **129 (ODD Number).**

A) secant | B) chord |

C) tangent | D) None of the above |

Explanation:

A segment with endpoints on the circle is a chord. The longest chord of a circle is a diameter of the circle.

A) One 1 Seven 7 Ten 10 | B) One 1 Seven 10 0 ones |

C) 1 hundred, 7 tens, 0 ones | D) 1 ten and 7 ones |

Explanation:

Firstly 17 tens = 17 x 10 = 170

17 tens = 170 in unit form can be written as 1 hundred, 7 tens, 0 ones.

A) Twenty eight thousand four hundred and twenty eight | B) Two lakhs eighty four thousand twenty eight |

C) Twenty eight lakhs forty thousand twenty eight | D) Two lakhs eight forty thousand twenty eight |