FIND THE 6TH AND 15TH TERM OF A AND B WHOSE 1ST TERM IS 6 AND COMMON DIFFERENCE IS 7
Now you did the one above, you can do this one.
T6=a+5d
T6=6+5×7=41
T15=a+14d
6+14×7
=6+98
=104
DONT UNDERSTAND THIS QUESTION
well, a = 6, given
and d = 7 given
Xn = 6 + (n-1)7
X6 = 6 + 5*7 = 41
X15 = 6 + 14*7