which term of ap 21,18,15.....iszero
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Answered by
5
heya it's Aastha.....
In an AP :-
a = 21, d = -3 ......
an = a + (n-1) d
0. = 21 -3n + 3
0 = 24 -3n
n= 8 .......
I hope it help you ✌️
In an AP :-
a = 21, d = -3 ......
an = a + (n-1) d
0. = 21 -3n + 3
0 = 24 -3n
n= 8 .......
I hope it help you ✌️
ansh206:
thanks
Answered by
5
a = 21
d = 18 - 21
d = -3
an = 0
an = a + ( n - 1 ) × d
0 = 21 + ( n - 1 ) × -3
-21 = ( n - 1 ) × 3
-21 / -3 = n - 1
n = 7 + 1
n = 8..
If you find my answer helpful please mark it as a brainliest..
d = 18 - 21
d = -3
an = 0
an = a + ( n - 1 ) × d
0 = 21 + ( n - 1 ) × -3
-21 = ( n - 1 ) × 3
-21 / -3 = n - 1
n = 7 + 1
n = 8..
If you find my answer helpful please mark it as a brainliest..
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