Which term of an A.P.: 3,8,13,18,....is 78 ?
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Answered by
1
a+(n-1)d=78
a is 3 and d is 5
n should be calculated as 16
so it is 16th term
a is 3 and d is 5
n should be calculated as 16
so it is 16th term
Answered by
1
A=3
D=8-3
D=5
AN=78
AN=A+(N-1)D
78=3+(N-1)(5)
75=5N-5
80=5N
N=16
D=8-3
D=5
AN=78
AN=A+(N-1)D
78=3+(N-1)(5)
75=5N-5
80=5N
N=16
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