Find the 7\(^{th}\) term of the sequence -10, 50, -250 ………..
- 165250
- 156250
-
-156250
- -165,250
The correct answer is: C
Explanation
T\(_7\) = ar\(^{n-1}\) = ar\(^{6}\)
a = - 10, r = - 5
T\(_7\) = -10(-5)\(^{6}\)
T\(_7\) = - 10 x 15625 = - 156250
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