in an AP, the common difference and 7th term is ( a7 )is 154 then find the first term
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Solution :-
Given that 7th term (a7) is 154 and common difference ('d') is also 154.
Let the first term be a.
⇒ a + 6d = 154
⇒ a + 6*154 = 154
⇒ a + 924 = 154
⇒ a = 154 - 924
⇒ a = - 770
So, first term of the given AP is - 770
Answer.
Given that 7th term (a7) is 154 and common difference ('d') is also 154.
Let the first term be a.
⇒ a + 6d = 154
⇒ a + 6*154 = 154
⇒ a + 924 = 154
⇒ a = 154 - 924
⇒ a = - 770
So, first term of the given AP is - 770
Answer.
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