Question

5 x 6 x 5 x 2 x 5 x 4 x 5 x 3 = ?

Answer 1

5 x 6 x 5 x 2 x 5 x 4 x 5 x 3

=(5x6) x (5x2) x (5x4) x (5x3)

=30 x 10 x20 x15

=(30x10)x(20x15)

=300x300

=90000

Answer 2

( 5 x 5 x 5 x 5 ) x ( 6 x 2 x 4 x 3 ) 

= 625 x 144

= 90 000 

tick dùm ~~