Using eight eights and addition only, can you make 1000?

Can you replace the question mark with the correct number in the below table sequence?

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.

Find the last number in the series below:

voN luJ yaM raM ---

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

Which is heavier: a ton of bricks or a ton of feathers?

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

Can you solve the maths in the below-given picture equation?

What has one letter and starts with an E?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?