1.

Find the common difference if a27th - a7th =84

Answer» D= 4.2
It is 26d+6d...
a+26d - a+6d=8426d-6d=8420d=84d=4.2
A27-a7=84A+26d-a+6d=8432d=84D=84/32D=21/8


Discussion

No Comment Found