Question

1. What is 10 – 1 =?
2. What is 100 – 1 =?
3. What is 10,000 – 1 =?
4. What is 1,00,000 – 1 =?
5. What is 1,00,00,000 – 1 =?
(Hint : Use the said pattern.)

Answer 1

1-9
2-99
3-9999
4-99999
5-9999999

Answer 2

10-1=9 100-1=99 1000-1=999 10000-1=9999 100000-1=99999