is 68 a term 0f ap7,10,13....?
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68 is not a team of AP7,10,13,..........?
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a=7
d=3
An=68
An=a+(n-1)d
68 =7+(n-1)3
68 =7+3n-3
68=4+3n
3n=68-4
3n=64
n=64/3
n can't be (-)ve.
So 68 is not a term of the given Ap.
d=3
An=68
An=a+(n-1)d
68 =7+(n-1)3
68 =7+3n-3
68=4+3n
3n=68-4
3n=64
n=64/3
n can't be (-)ve.
So 68 is not a term of the given Ap.
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