Monthly Archives: September 2016

Amicable Numbers

Let me start with the basic definition of Amicable Numbers. Definition : If the sum of divisors of N1 is N2 and the sum of divisors of N2 is N1 , then N1 and N2 are called as amicable numbers. … Continue reading

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Protected: Tech Mahindra Placement Paper -2

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Protected: Tech Mahindra Placement Questions

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Number Theory-1

Factorial is an important topic in various competitive exams based quantitative aptitude.Factorial topic finds its application in Permutation and Combinations , Probability , Number theory ,etc… Factorial number or n! is the product of n consecutive natural numbers starting from … Continue reading

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Percentages- Problem

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Introductory Concepts on Ratio & Proportion

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Some of important most repeated TCS Questions

  Q.1 ) Raju drives slowly along the perimeter of a rectangular park at 24 kmph and completes one full round in 4 minutes. If the ratio of the length to the breadth of the park is 3:2, what are … Continue reading

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Power Cycle Concept and its application

  In this post , i have given brief introduction to the power cycle concept and its application in finding the last digits of a number raised to another number. I will be writing about it in detail in upcoming … Continue reading

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10 Random Quantitative Questions [Solutions]

Q.1 ) If n ! has 281 trailing zeros .What is maximum possible value of n.? Solution :  This problem is solved by trail n error method using the formula No of trailing zeros = N/ 5 + N/ 25 … Continue reading

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10 Random Quantitative Aptitude Questions 

Q.1 ) If n ! has 281 trailing zeros .What is maximum possible value of n.? Q.2) Find the total number of factors , even factors  & odd factors of 928. Q.3) Total no of factors that can divide 1728 … Continue reading

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