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  1. Devesh can cover a certain distance in 1 hour and 24 minutes by covering two-third of the distance at 6 km/hour and the rest at 7 km/hr. Calculate the total distance.
  2. PandQtakepartinthe100mrace.Prunsat6kmph.PgivesQastartof8mandstillbeatshim by 8 seconds. The speed of Q is:
  3. Find the product of (8.77 x 8.77 x 8.77+ 4.23 x 4.23 x 4.23) / (8.77 x 8.77 - 8.77 x 4.23+ 4.23 x 4.23)?
  4. What is the least number of square tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad?
  5. A & B partner in a business, A contributes 1/4 of the capital for 15 months & B receives 2/3 of the profit. For how long B's money was used?
  6. In a triangle ABC, the lengths of the sides AB, AC and BC are 3, 5 and 6 cm respectively. If a point D on BC is drawn such that the line AD bisects the ∠A internally, then what is the length of BD?
  7. If the length of a rectangle is halved and its breadth is tripled, what is the percentage change in its area?
  8. In a 200 meters race, A beats B by 20 meters, while in a 100 meters race, B beats C by 5 meters. A beats C in a kilometer race by
  9. A dress was initially marked at $150, and a pair of jeans were priced at $50. If Emily got a 40% discount off the dress and a 20% discount on the jeans, what was the total percentage she saved on her purchases?
  10. The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
  11. What will be the output of the program? 
#includeint main()
{
    float arr[] = {12.4, 2.3, 4.5, 6.7}; 
    printf("%dn", sizeof(arr)/sizeof(arr[0])); 
    return 0;
}
  1. Write a program to check given string is a valid IPv4 address or not.
  2. Write a program to find the first non-repeated character of a given String.
  3. What is the use of printf() and scanf() functions? Also, explain format specifiers.
  4. What is recursion in C?