Răspuns :
24x75=6x4x3x25=
=(6x25)x(4x3)=
=150x12=
=1800
28x75=4x7x3x25=
=(4x25)x(7x3)=
=100x21=
=2100
36x25=9x4x5x5=
=(9x5)x(4x5)=
=45x20=
=900
28x25=4x7x5x5=
=(4x5)x(7x5)=
=20x35=
=700
=(6x25)x(4x3)=
=150x12=
=1800
28x75=4x7x3x25=
=(4x25)x(7x3)=
=100x21=
=2100
36x25=9x4x5x5=
=(9x5)x(4x5)=
=45x20=
=900
28x25=4x7x5x5=
=(4x5)x(7x5)=
=20x35=
=700