AP ICET 11th September 2020 Shift-2

Instructions

For the following questions answer them individually

Question 131

If the coefficients of the second, third and fourth terms in the binomial expression of $$(1 + x)^{n}$$ are in arithmetical progression, then a value of n =

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Question 132

If $$A =\begin{bmatrix} 1 & 2 & 3 \\ 0 & 1 &  2 \\ 0 & 0 & 1 \end{bmatrix}, B =\begin{bmatrix} x \\ y \\  z \end{bmatrix} $$ and $$ AB =\begin{bmatrix} 6 \\  3 \\ 1 \end{bmatrix}$$,  then $$x + y + z = $$

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Question 133

IF a be a 2$$\times$$2 matrix such that $$A\begin{bmatrix} 7 & 8 \\ 5 & 6 \end{bmatrix} = \begin{bmatrix} 3 & -4 \\ 2 &  -3 \end{bmatrix}$$, then trace of A =

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Question 134

$$\lim_{n \rightarrow \infty}\left\{\frac{1}{5.9} + \frac{1}{9.13} + \frac{1}{13.17} + \cdot\cdot\cdot + \frac{1}{(4n+1)(4n+5)}\right\}=$$

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Question 135

The value of $$\frac{d}{dx}(x^{x})$$ at $$x = \frac{1}{e}$$, is

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Question 136

Two triangles have equal area. If their bases are in the ratio 3 : 4, then the ratio of altitudes drawn to their bases, in the same order is

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Question 137

If the lengths of the diagonals of a Rhombus are 9cm and 12cm, hen its perimeter (in centimeters) is

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Question 138

The maximum number of common tangents that can be drawn to two circles which touch each other, is

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Question 139

If the distance between the point (3, 0) and a point P is 5, then P cannot be

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Question 140

Which one of the following points is nearest to the origin?

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