Q71. There are two pipes A and B. If A filled 10 liters in a hour B can fills 20 …

Q51. If a three digit number ‘abc’ has 3 factors, how many factors does the 6-digit number ‘abcabc’ have ?

a …

Q31. Vodafone has come up with a new scheme “Pay Easy”. They have decided to charge the first 100 calls …

Q21. A boy buys 18 sharpeners (brown or white) for Rs. 100. For every white sharpener, he pays one rupee …

Q11. Spores of a fungus, called late blight, grow and spread infection rapidly. These pathogens were responsible for the Irish …

1. A mother, her little daughter and her just born infant boy together stood on a weighing machine which shows …

Competitive programming is key to improve your coding skills. It requires strong understanding of data structures, algorithms and the programming …

Let's take a string s,  we want to reverse its words. For example - 

Sample input 1

Hello HackersFriend …

A Data scientist plays very crucial roles in industry. Their decisions drives the next steps of industry. As a Data …

1. What will be the output of following code :

int main()
{
  int a = NULL – true;
  printf(“%d”,a);
  return 0 …