## Inplace rotate square matrix by 90 degrees | Set 1

Given an square matrix, turn it by 90 degrees in anti-clockwise direction without using any extra space. Examples : Input 1 2 3 4 5… Read More »

## Flyweight Design Pattern

Flyweight pattern is one of the structural design patterns as this pattern provides ways to decrease object count thus improving application required objects structure. Flyweight… Read More »

## Aptitude | Calendars | Question 2

The last day of a century cannot be: (A) Thursday (B) Monday (C) Wednesday (D) Sunday Answer: (A) Explanation: Quiz of this QuestionPlease comment below… Read More »

## Aptitude | Calendars | Question 1

Today is Monday. After 61 days, it will be: (A) Monday (B) Saturday (C) Sunday (D) Tuesday Answer: (B) Explanation: After 63 days it will… Read More »

## Aptitude | Probability | Question 10

Ram speaks truth in 3/4 of cases and Shyam in 4/5 of cases. In what percent of cases while narrating the same event are they… Read More »

## Aptitude | Probability | Question 9

A box having 5 black and 3 brown flags. Another box having 4 black and 6 brown flags. If one flag is drawn from each… Read More »

## Aptitude | Probability | Question 8

A 5 digit number is formed by using digits 1, 2, 3, 4 and 5 with no two digits same. What is the probability that… Read More »

## Aptitude | Probability | Question 7

A bag contains 21 balls numbered 1 to 21. two balls are drawn one after another without replacement. Find the probability that both balls are… Read More »

## Aptitude | Probability | Question 6

What is the probability that a number selected from numbers [1,30] is prime number? (A) 1/3 (B) 2/7 (C) 5/9 (D) 5/30 Answer: (A) Explanation:… Read More »

## Aptitude | Probability | Question 5

An urn contains 12 red and 18 white marbles. Two marbles are drawn without replacement one after another. What is the probability that first is… Read More »

## Aptitude | Probability | Question 4

4 dices are thrown simultaneously. What is the probability that all the dices show the same number. (A) 1/216 (B) 1/36 (C) 4/216 (D) 4/36… Read More »

## Aptitude | Probability | Question 3

A box contains 6 black, 5 brown and 2 yellow balls. If 2 balls are selected at random, what is the probability that both are… Read More »

## Aptitude | Probability | Question 2

A and B appeared for an exam. Let A is selected when even x happens and B is selected if the event y happens. The… Read More »

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## Aptitude | Probability | Question 1

A number p is chosen at random from the numbers [-3, 3]. What is the probability that value of p < 2 (A) 3/7 (B) 5/7… Read More »

## Aptitude | Syllogism | Question 6

Statements: Some S are L Some C are P Some P are R Conclusions: I. Some P are L II. Some C are R (A)… Read More »