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GATE Electrical 2013 | Question: 64

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GATE Electrical 2013 | Question: 65
Find the sum to $n$ terms of the series $10+84+ 734 +\dots $$\dfrac{9(9^n+1)}{10}+1 \\$$\dfrac{9(9^n-1)}{8}+1 \\$$\dfrac{9(9^n-1)}{8}+n \\$$\dfrac{9(9^n-1)}{8}+n^2$
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GATE Electrical 2013 | Question: 63
The set of values of $p$ for which the roots of the equation $3x^2+2x+p(p-1)=0$ are of opposite sign is$(-\infty ,0)$$(0,1)$$(1,\infty )$$(0,\infty )$
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GATE Electrical 2013 | Question: 61
What is the chance that a leap year, selected at random, will contain $53$ Saturdays?$2/7$$3/7$$1/7$$5/7$
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