4. Which term of the AP:3, 8, 13, 18, ...,is 78?
ftarms in each of the following APs.
Answers
Answered by
1
Answer:
16th term
Explanation:
In AP, nth term = a + (n - 1)d, symbols have usual meaning.
Here,
a = 3 , d = 8 - 3 = 5
Let 78 be the nth term.
⇒ 3 + (n - 1)(5) = 78
⇒ (n - 1)5 = 78 - 3 = 75
⇒ n - 1 = 75/5 = 15
⇒ n = 15 + 1 = 16
16th term is 78
Answered by
1
Answer:
23
Explanation:
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