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Answer: 3 and 6 will be the first and second term of the given series respectively.
Explanation: since it is given- and
so, by replacing n by 4, we will get- ⇒870=
⇒
after solving this equation we will get, and 30.
If , but it is not a whole number.
Thus, will be the value of third term of the given series.
Again, by applying the given condition ,
or -5 (not possible), so,
will be the second term.
Similarly, or -2 but we will go to the whole number.
Thus, will be the first term.
Why?
Because if you draw a line from A to D to make a triangle AED, then triangle all angle add up equal 180.
Because if you draw a line from A to D to make a triangle AED, then triangle all angle add up equal 180.