Question

sa grupați termenii cunvenabil:
9 + 99 + 999 + ...+999...9 10 cifre

Answer 1

Answer:

Step-by-step explanation:

Ans:-

9+99+999+999+9999+99999

We can take a common of 9 from the above equation

9(1+11+111+1111+11111)

Here we can use a trick to solve this equation

(Just count how many 1 are there in the last number . write it down like 12345)

Then multiply it with 9

9×12345

(10–1)×12345

Put 0 in the right side of the number then subtract that number

Like :- 123450–12345=111105

Answer 2

Answer:

$<font color ="blue">$ ✨ Hearthacker143 ✨

Step-by-step explanation:

We can take a common of 9 from the above equation

9(1+11+111+1111+11111)

Here we can use a trick to solve this equation

(Just count how many 1 are there in the last number . write it down like 12345)

Then multiply it with 9

9×12345

(10–1)×12345

123450-12345= 111105

$<font color = "green"><marquee>❤❤❤ Insta I'd:-Hearthacker14380❤❤❤</marquee> </font>$