This is aptitude questions and answers section on Numbers and Ages with explanation for various interview, competitive examinations and entrance tests. On this page, contenders can find the important Numbers, and Ages Aptitude Questions tricks related questions which are usually asked in competitive exams. To make the Numbers and Ages Quiz chapter easy for you all, we are providing the basic concepts of Numbers and Ages Online Test which will surely help you to ace the test easily. Contenders test yourself by attempting the Numbers and Ages Aptitude MCQ Online Test on this page.
Numbers and Ages Questions - Numbers and Ages Quiz Details
| Online Test Name |
Numbers and Ages |
| Exam Type |
Multiple Choice Questions |
| Category |
Aptitude Quiz |
| Number of Questions |
53 |
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Numbers and Ages Aptitude Questions
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Numbers and Ages Formulae
Numbers
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.
Ages
1. Age after n years = X + n
2. Age n years ago = X – n
3. n times the age = nX
4. Age of y = (Ratio of y/Sum of ratios)× sum of ages
5. Age of y = (q/p+q)× A
Numbers and Ages MCQ Quiz Answers With Solutions
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