Question

Tính nhanh

(125 x 4 - 1000 : 2) x ( 1 x2 x 3 x... x 99 x 100)

Answer 1

(125 x 4 - 1000 : 2) x ( 1 x2 x 3 x... x 99 x 100)

=(500 - 500 ) x ( 1 x2 x 3 x... x 99 x 100)

=0 x ( 1 x2 x 3 x... x 99 x 100)

=0

Answer 2

( 125 x 4 - 1000 : 2 ) x ( 1 x 2 x 3 x ... x 99 x 100 )

Đặt A = 125 x 4 - 1000 : 2

      B = 1 x 2 x 3 x ... x 99 x 100

A = 125 x 4 - 1000 : 2

A = 500 - 500

A = 0

Thay vào , ta có :

0 x ( 1 x 2 x 3 x ... x 99 x 100 )

= 0 

Answer 3

( 125 x 4 - 1000 : 2 ) x ( 1 x 2 x 3 x ... x 99 x 100 )

Đặt A = 125 x 4 - 1000 : 2

      B = 1 x 2 x 3 x ... x 99 x 100

A = 125 x 4 - 1000 : 2

A = 500 - 500

A = 0

Thay vào , ta có :

0 x ( 1 x 2 x 3 x ... x 99 x 100 )

= 0

Answer 4

( 125 x 4 - 1000 : 2 ) x ( 1 x 2 x 3 x ... x 99 x 100 )

Đặt A = 125 x 4 - 1000 : 2

      B = 1 x 2 x 3 x ... x 99 x 100

A = 125 x 4 - 1000 : 2

A = 500 - 500

A = 0

 ta có :

0 x ( 1 x 2 x 3 x ... x 99 x 100 )

= 0