This is aptitude questions and answers section on Problems on Numbers with explanation for various interview, competitive examinations and entrance tests. Aspirants do you want to become perfect in Problems on Numbers Aptitude Quiz? If yes, practice all the provided problems on numbers aptitude questions and answers provided in the below sections.
__Problems on Numbers Questions - Problems on Numbers Quiz Details__

__Problems on Numbers Formulae__

1. (a + b)(a - b) = (a2 - b2)

2. (a + b)2 = (a2 + b2 + 2ab)

3. (a - b)2 = (a2 + b2 - 2ab)

4. (a + b + c)2 = a2 + b2 + c2 + 2(ab + bc + ca)

5. (a3 + b3) = (a + b)(a2 - ab + b2)

6. (a3 - b3) = (a - b)(a2 + ab + b2)

7. (a3 + b3 + c3 - 3abc) = (a + b + c)(a2 + b2 + c2 - ab - bc - ac)

8. When a + b + c = 0, then a3 + b3 + c3 = 3abc.

Online Test Name |
Problems on Numbers |

Exam Type |
Multiple Choice Questions |

Category |
Aptitude Quiz |

Number of Questions |
169 |

2. (a + b)2 = (a2 + b2 + 2ab)

3. (a - b)2 = (a2 + b2 - 2ab)

4. (a + b + c)2 = a2 + b2 + c2 + 2(ab + bc + ca)

5. (a3 + b3) = (a + b)(a2 - ab + b2)

6. (a3 - b3) = (a - b)(a2 + ab + b2)

7. (a3 + b3 + c3 - 3abc) = (a + b + c)(a2 + b2 + c2 - ab - bc - ac)

8. When a + b + c = 0, then a3 + b3 + c3 = 3abc.

1. A number exceeds by 25 from its 3/8 part. Then the number is?
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2. Ratio between two numbers is 3: 4 and their sum is 420. Find the smaller number?
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3. Difference between two numbers is 5, six times of the smaller lacks by 6 from the four times of the greater. Find the numbers?
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4. Sum of two numbers is 15. Two times of the first exceeds by 5 from the three times of the other. Then the numbers will be?
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5. Sum of two numbers is 80. Greater number exceeds by 5 from four times of the smaller. Find the numbers?
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