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Statistics 3 Marks Each

Geometric progression · Gujarat Board (GSEB) STD 11 Commerce (GSEB - English Medium). 15 questions.

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15 questions · timed · auto-graded

Question 13 Marks
A person donates $₹ 300$ in January, the first month of a year. In every month thereafter, he donates twice the amount of the previous month. What would be the total amount of his donation at the end of the year?
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Question 73 Marks
If the third term of a $G. P.$ is square of its first term and the fourth term is $3125$ , find the progression.
Answer
$9.$ $25,125,625, \ldots \ldots$
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Question 83 Marks
If $S _n=\frac{5}{3}\left(4^n-1\right)$, find $T _{n+1}$ and $T _3$.
Answer
8. $T _{n+1}=5(4)^{ n }$ and $T _3=80$
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Question 103 Marks
If $r=\frac{1}{3}, S _3=\frac{585}{4}$ for a $G. P.$, find the first term.
Answer
$6.$ $a=\frac{405}{4}$
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Question 133 Marks
If $r=\frac{1}{3}, S _4=\frac{80}{27}$ for a $G . P$, find $a$ and $T _{6^*}$
Answer
$3.$ $a=2$ and $T _6=\frac{2}{243}$
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3 Marks Each - Statistics STD 11 Commerce Questions - Vidyadip