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WBJEE Maths Test - 13 - JEE MCQ


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30 Questions MCQ Test WBJEE Sample Papers, Section Wise & Full Mock Tests 2025 - WBJEE Maths Test - 13

WBJEE Maths Test - 13 for JEE 2024 is part of WBJEE Sample Papers, Section Wise & Full Mock Tests 2025 preparation. The WBJEE Maths Test - 13 questions and answers have been prepared according to the JEE exam syllabus.The WBJEE Maths Test - 13 MCQs are made for JEE 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for WBJEE Maths Test - 13 below.
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WBJEE Maths Test - 13 - Question 1

The positive integer just greater than (1 + .0001)10000 is

WBJEE Maths Test - 13 - Question 2

The inverse point of (1, 2) with respect to the circle x2 + y2 - 4x - 6y + 9 = 0 is

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WBJEE Maths Test - 13 - Question 3

If the line lx+my=1 is a tangent line to the circle x2+y2=a2, the locus of (l,m) is

WBJEE Maths Test - 13 - Question 4

[(-1+√-3)/2]3n + [(-1-√-3)/2]3n =

WBJEE Maths Test - 13 - Question 5

The coefficients of three successive terms in the expansion of (1 + x)n are 165, 330 and 462 respectively, then the value of n will be

Detailed Solution for WBJEE Maths Test - 13 - Question 5

Let coefficients of three consecutive terms i.e., (r + 1)th, (r + 2)th and (r + 3)th in expansion of (1 + x)n are 165.330 and 462 respectively then
coefficient of (r + 1)th term = nCr = 165
coefficient of (r + 2)th term = nCr + 1 = 330
coefficient of (r + 3)th term = nCr + 2 = 462
∴ n C r + 1 n C r = n - r r + 1 = 2
or, n - r = 2(r + 1)
or, r = 1 3 (n - 2)
and n C r + 2 n C r + 1 = n - r - 1 r + 2 = 231 165
or, 165(n - r - 1) = 231 (r + 2)
or, 165n - 627 = 396r
or, 165n - 627 = 396 x 1 3 (n - 2)
or, 165n - 627 = 132 (n - 2)
or, 33n = 363
∴ n = 11

WBJEE Maths Test - 13 - Question 6

If x is positive, then the first negative terms in the expansion of 1 + x 27 5 is

Detailed Solution for WBJEE Maths Test - 13 - Question 6

WBJEE Maths Test - 13 - Question 7

If w is a cube root of unity, then the value of (1 + ω - ω)2 (1 - ω + ω2) is

WBJEE Maths Test - 13 - Question 8

WBJEE Maths Test - 13 - Question 9

WBJEE Maths Test - 13 - Question 10

WBJEE Maths Test - 13 - Question 11

If m and n are integers, then what is the value of

Detailed Solution for WBJEE Maths Test - 13 - Question 11

Since sin mx ,sin nx is an odd function if m ≠ n, then ∫ 0 π sin mx . sin nx dx = 0

 

WBJEE Maths Test - 13 - Question 12

The area bounded by the parabola y2=4ax and the straight line y=2ax is

Detailed Solution for WBJEE Maths Test - 13 - Question 12

On solving y 2 = 4ax and y = 2ax, we get


x = 0 or 1 a
and y = 0 or 2

WBJEE Maths Test - 13 - Question 13

WBJEE Maths Test - 13 - Question 14

The order and degree of the equation are

WBJEE Maths Test - 13 - Question 15

The particular integral of (D2 + 1)y = xe2x is equal to

WBJEE Maths Test - 13 - Question 16

If y=log logx, ey(dy/dx)=

WBJEE Maths Test - 13 - Question 17
(d/dx)(log tan x)=
WBJEE Maths Test - 13 - Question 18

If the normal at the point P(θ) to the ellipse ((x2/14)+(y2/5) = 1) intersects it again at the point Q(2θ), then cosθ is equal to

WBJEE Maths Test - 13 - Question 19
If the latus rectum of an ellipse is one half of its minor axis, then its eccentricity is
WBJEE Maths Test - 13 - Question 20

The parametric equations of the hyperbola x2/a2 - y2/b2 = 1 are

WBJEE Maths Test - 13 - Question 21

The eccentricity of the conic 9x2 - 16y2 = 144 is

WBJEE Maths Test - 13 - Question 22
Let f(x) = tan-1 {φ(x)}, where φ(x)is monotonically increasing for 0 < x < π/2. Then f(x) is
Detailed Solution for WBJEE Maths Test - 13 - Question 22
f x = φ x 1 + { φ x } 2 > 0 for 0 < x < π 2 because φ x > 0, φ x being monotonically increasing
WBJEE Maths Test - 13 - Question 23

Sin (sin⁻11/2 + cos⁻11/2) equals

WBJEE Maths Test - 13 - Question 24

If is finite, then the values of a,b are respectively

WBJEE Maths Test - 13 - Question 25
If the value of a third order determinant is11, then the value of the square of the determinant formed by the co-factors will be
WBJEE Maths Test - 13 - Question 26

Largest value of min (2 + x2, 6 - 3x) when x > 0 is :

WBJEE Maths Test - 13 - Question 27
If a complex number lies in the IIIrd quadrant then its conjugate lies in quadrant number
WBJEE Maths Test - 13 - Question 28

The vertex of the parabola x 2 + 8 x + 12 y + 4 = 0 is

WBJEE Maths Test - 13 - Question 29

Axis of the parabola x 2 − 3 y − 6 x + 6 = 0 is

WBJEE Maths Test - 13 - Question 30
Out of 15 points in a plane, no three are in a straight line except 8 points which are collinear. How many triangles can be formed by joining them?
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