Question

180:{300:[450-(4x5^3-2^2x25)]}

Answer 1

180 : { 300 : [ 450 - ( 4 . 5³ - 2² . 25 )]}

= 180 : { 300 : [ 450 - ( 4 . 125 - 4 . 25 )]}

= 180 : { 300 : [ 450 - ( 500 - 100 )]}

= 180 : { 300 : 50 }

= 180 : 6

= 30

Answer 2

180: ( 300: ( 450 - (4 x 5³ - 2²x 25)))

=180: ( 300: ( 450 - ( 500 - 100 )))

=180: ( 300: ( 450 - 400 ))

=180: ( 300: 50)

=180: 6 = 30