Question

[Vũ Huy Tâm]

Bài 1 :

18 x 123 + 9 x 4567 x 2 + 3 x 5310 x 6 

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( 2 + 4 + 6 + 8 + ....... + 22 ) + 48

Answer 1

[Duong Thi Nhu Quynh]

545654

65654145

Answer 2

[Hà Hoàng Thịnh]

18 x 123 + 9 x 4567 x 2 + 3 x 5310 x 6

= 18 x ( 123 + 4567 + 5310 )

= 18 x 10000

= 180000

( 2 + 4 + 6 + 8 + ... + 22 ) + 48

= ( 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 ) + 48

=             132 + 48

= 180

k mình nha