What does 3G DENOTE?

Technical Question:

What can be said of the following?
struct Node {
char *word;
int count;
struct Node left;
struct Node right;
}

main ()
{
int X=4;
printf(“%d”,INC(X++));
}

What is the value assigned to the variable X if b is 7? X = b>8? b <<3: b>4? b>>1: b;

Along with this you should also learn Time Management In Exam.
Which is the output produced by the following program

main()
{
int n=2;
printf(“%d %d\n”, ++n, n*n);
}

A train, 800-meter-long is running with a speed of 78 km/hr. It crosses a tunnel in 1 minute. What is the length of the tunnel?

Ages of two persons differ by 16 years. If 6 year ago, the elder one be 3 times as old the younger one, find their present age.

Shruti purchased several number of three articles P, Q and R in the proportion 3: 2: 3. If the unit costs of the articles P, Q and R are 200, Rs. 90 and Rs. 60 respectively, how many articles of Q must have been purchased in the total purchases of Rs. 4800?

The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?