Using Only Five 5's and any mathematical operator make sum as 37

In the given picture, you can find two letters missing. When two particular letters are placed in the missing spots, you get an eight-letter word while reading in the anti-clockwise direction. Can you find out the missing letters and the missing word eventually?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

Which wheel of car does not rotate when you turn your car right?

Why Aeroplane windows are round?

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

what does the below math rebus puzzle mean?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.