Can you fill the blank with the correct number?

6 30 870 756030 _____

Solve below rebus puzzle?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10

There are seven sisters in a house in a village where there is no electricity or any gadget.

Sister-1: Reading Novel
Sister-2: Cooking
Sister-3: Playing Chess
Sister-4: Playing Sudoku
Sister-5: Washing clothes
Sister-6: Gardening

what is Sister-7 doing ?

What does the below rebus riddle means?

The more of this there is, the less you see. What is it?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?