Can you find the key in the picture below?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

Why did Navjot Singh Sidhu put the new January calendar in the freezer

What is black when you buy it, red when you use it, and gray when you throw it away?

A man dies of old age on his 25 birthday. How is this possible?

When can we add 2 to 11 and get 1 as the correct answer?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

The following "Brain Bat" means Slow Down.
S
L
O
W

Using the same logic, can you tell us what does the following Brain Bat means ?
E
V
I
G

Can you find the mistake in the below statement?

What's the best place to go shopping in the ocean?