Answer: A) Y = ( int ) ( x + 0.5 ) ; Explanation: Rounding off a value means replacing it by a nearest value that is approximately equal or smaller or greater to the given number.   y = (int)(x + 0.5); here x is any float value. To roundoff, we have to typecast the value of x by using (int)   Example:   #include   int main ()   {     float x = 2.6;     int y = (int)(x + 0.5);     printf ("Result = %d\n", y );     return 0;   }   Result : 3

Answer: D) 321 Explanation: No. of people who read Hindu = 285No. of people who read TOI = 127No. of people who read IE = 212Now, No. of people who read Hindu and TOI both is = 20No. of people who read TOI and IE both is = 35No. of people who read Hindu and IE both is = 29Let No. of people who read Hindu , TOI and IE all is = x ;So, only Hindu is = 285-20-29-x = 236-x ;Only TOI is = 127-20-35-x = 72-x ;Only IE is = 212-35-29-x = 148-x ;Now, 236-x + 72-x + 148-x + 20 + 29 + 35 + x + 50 = 500 590 -2x = 500 So, x = 45 this is the value who read all the 3 dailies.So, No. of people who read only one paper is = 236-45 + 72-45 + 148-45 = 191 + 27 + 103 = 321.