If in an A-P, a=15,d=-3, an=o find the value of n
Answers
Answered by
1
Given :-
First term (a) = 15
Common difference (d) = -3
Last term (an) = 0
To Find :-
Number of terms n
Solution :-
Putting values
0 = 15 + (n - 1)-3
-15 = -3n + 3
-15 - 3 = -3n
-18 = -3n
-18/-3 = n
6 = n
Similar questions
Computer Science,
7 months ago
English,
7 months ago
Math,
1 year ago
History,
1 year ago
Math,
1 year ago