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

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

What does below Rebus say?

XLR8

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What number divided by 4 is the same as that number minus 4?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

Find the next number in the series.
1 10 24 43 67 ?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

I don't get anymore wetter, no matter how much rain falls on me.