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Important Formulas

Vedic/Quicker Math

Alligation or Mixture

Area

Average

Banker's Discount

Boats and Streams

Calendar

Chain Rule

Clock

Compound Interest

Decimal Fraction

Height and Distance

Logarithm

Odd Man Out and Series

Partnership

Percentage

Permutation & Combination

Pipes and Cistern

Probability

Problems on Ages

Problems on H.C.F & L.C.M

Problems on Numbers

Problems on Trains

Profit & Loss

Races and Games

Ratio and Proportion

Simple Interest

Simplification

Square Root and Cube Root

Stocks and Shares

Surds and Indices

Time and Distance

Time and Work

True Discount

Volume and Surface Area

Practice Questions

:- You can add tough questions into
your favourite list for second revision. Note |

Q1. | How many of the following numbers are divisible by 132 ? 264, 396, 462, 792, 968, 2178, 5184, 6336 |

A. | 5 [Wrong Answer] |

B. | 4 [Correct Answer] |

C. | 6 [Wrong Answer] |

D. | 7 [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss it below :132 = 11 X 3 X 4.Clearly, 968 is not divisible by 3 None of 462 and 2178 is divisible by 4. And, 5184 is not divisible by 11. Each one of the remaining four numbers is divisible by each one of 4, 3 and 11. So, there are 4 such numbers. Click here for more comments |

Q2. | If the number 653 xy is divisible by 90, then (x + y) =? |

A. | 2 [Wrong Answer] |

B. | 3 [Wrong Answer] |

C. | 4 [Correct Answer] |

D. | 6 [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss it below :RAJESH RAJ Said on 2019-08-12 09:53:5490 = 10 x 9 Clearly, 653 Now, 653 So, (6 + 5 + 3 + Hence, ( Click here for more comments |

Q3. | 3251 + 587 + 369 - ? = 3007 |

A. | 1200 [Correct Answer] |

B. | 1300 [Wrong Answer] |

C. | 1375 [Wrong Answer] |

D. | 1250 [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss it below :3251 + 587 + 369 = 42074207 - 3007 = 1200. Click here for more comments |

Q4. | The sum of fist 45 natural numbers is : |

A. | 1035 [Correct Answer] |

B. | 1280 [Wrong Answer] |

C. | 2070 [Wrong Answer] |

D. | 2140 [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss it below :Let S_{n} = (1 + 2 + 3 + ... + 45).
This is an A.P. in which a = 1, d = 1, n = 45. S _{n} = ^{n}/_{2}^{45}/_{2}^{45}/_{2}^{ X 46}Ayyanagouda Said on 2017-03-08 03:30:07=45*(45+1)/2 =1035 Ayyanagouda Said on 2017-03-08 03:29:27=n*(n+1)÷2 45*(45+1)÷2 ÷1035 Click here for more comments |

Q5. | The smallest 3-digit prime number is : |

A. | 101 [Correct Answer] |

B. | 107 [Wrong Answer] |

C. | 109 [Wrong Answer] |

D. | 113 [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss it below :The smallest 3-digit number is 100, which is divisible by 2.100 is not a prime number. √101 <11 and 101 is not divisible by any of the prime numbers 2, 3, 5, 7, 11. So 101 is a prime number Hence 101 is the smallest 3-digit prime number. Click here for more comments |

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