PDF chapter test TRY NOW

Write the product as a power:
 
а) 11⋅11⋅11⋅11 \(=\) ii
 
b) 7.5⋅7.5⋅7.5⋅7.5⋅7.5⋅7.5⋅7.5 \(=\) ii
 
c) 111⋅111 \(=\) iii