Question

20,21 x 109 - 20, 21 x 8 - 20,21

Answer 1

`20,21xx109-20,21xx8-20,21`

`=20,21xx(109-8-1)`

`=20,21xx100=2021`

Answer 2

20,21 x 109 - 20, 21 x 8 - 20,21

= 20,21 x ( 109 - 8 - 1 )

=20,21 x 100 =2021

Answer 3

= 20,21 x (109 - 8 -1)

= 20,21 x 100

= 2021

Answer 4

= 20, 21 x (109 - 8 - 1)

= 20, 21 x 100 

= 2021

Answer 5

 

20,21 x 109 - 20, 21 x 8 - 20,21

= 20,21 x 109 - 20,21 x 8 - 20,21 x 1
= 20,21 x (109-8-1)
=20,21 x 100
= 2021