Can you solve this tricky maths equation problem by replacing it? mark with the correct symbol?

19834 -----: 187
15921 -----: 153
17561 -----: 139
13734 -----: ???

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Women do it once a year after they turn 19 but men get to do it only once in a lifetime. What is it?

Forwards I am heavy, backward I am not. What am I?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

Why did Buffon take the goal with him after every Juventus match?

Which is faster, Heat or Cold ? Explain.

What can you see in the middle of March and April that you can never see in any other month?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

Can you count the number of lines in the below picture?