88 x 99 x 100 x 101 

= 8712 x 101 x 100

= 879912 x 100 

= 87991200

It was the day of my grandmother’s 80th birthday when the sitting room ceiling fell down .All the family were there , at my uncle Phillip’s house, ..................(1) was a large , old building situated in a small , peaceful village north- west (2) ..........................Oxford . We (3) .......................already finished lunch and , as (4) .............................was such a beautiful afternoon, we were all outside (5) ..................... the garden , drinking coffee and catching (6)............................on all the family news . Grandmother, (7) ....... .......................was rather deaf ,was (8)............................usual, telling stories about her childhood in Manchester, (9).............................in the sunshine , laughing children and barking dogs chased each (10) ...............................around.

HELP!!!!!!!

Số cốc trong hộp thứ nhất là : 

120 : ( 1 + 3 ) x 1 = 30 ( chiếc ) 

Số cốc trong hộp thứ 2 là :

120 : ( 1 + 4 ) x 1 = 24 ( chiếc )

Số cốc trong hộp thứ 3 là : 

120 - ( 30 + 24 ) = 66 ( chiếc )

Đáp số : 66 chiếc