which term of the AP
3, 8, 13, 18........ is 78?
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Given
a=3, d=8-3=5
a(n)=78
n=?
Using the formula. => [a(n)=a+(n-1)d] we have,
78=3+(n-1)5
78-3=(n-1)5
75=(n-1)5
(n-1)=75/5
(n-1)=15
n=15+1
n=16
Therefore 16th term of A.P.
3,8,13,18...... is 78.
Hope you would have understand and don't forget to mark as the brainliest.
a=3, d=8-3=5
a(n)=78
n=?
Using the formula. => [a(n)=a+(n-1)d] we have,
78=3+(n-1)5
78-3=(n-1)5
75=(n-1)5
(n-1)=75/5
(n-1)=15
n=15+1
n=16
Therefore 16th term of A.P.
3,8,13,18...... is 78.
Hope you would have understand and don't forget to mark as the brainliest.
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