question_answer

Sunitha discovered a multiplication pattern. She wrote the number sentences below to show the pattern? \[\begin{align}   & 40\times 10=400 \\  & 71\times 10=710 \\  & 59\times 10=590 \\  & \square \,\times 10=280 \\ \end{align}\] What number should go in the box to complete the last number sentence?

A) 22                         

B) 28  

C) 80                         

D) 88