Q. What is the slope of the tangent line to the curve y = x^3 at x = 1? (2019)
Solution
The derivative y' = 3x^2. At x = 1, y' = 3(1^2) = 3.
Correct Answer:
C
— 3
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Q. What is the solution of the differential equation dy/dx = y/x?
-
A.
y = Cx
-
B.
y = Cx^2
-
C.
y = C/x
-
D.
y = C ln(x)
Solution
This is separable. Integrating gives y = Cx.
Correct Answer:
A
— y = Cx
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Q. What is the solution to the differential equation dy/dx = 3x^2?
-
A.
x^3 + C
-
B.
3x^3 + C
-
C.
x^2 + C
-
D.
3x^2 + C
Solution
Integrating both sides gives y = x^3 + C, where C is the constant of integration.
Correct Answer:
A
— x^3 + C
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Q. What is the solution to the differential equation dy/dx = 6x?
-
A.
y = 3x^2 + C
-
B.
y = 6x^2 + C
-
C.
y = 2x^2 + C
-
D.
y = 3x + C
Solution
Integrating gives y = (6/2)x^2 + C = 3x^2 + C.
Correct Answer:
A
— y = 3x^2 + C
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Q. What is the solution to the differential equation dy/dx = xy?
-
A.
y = Ce^(x^2/2)
-
B.
y = Ce^(-x^2/2)
-
C.
y = Cx^2
-
D.
y = C/x
Solution
This is separable. Separating and integrating gives y = Ce^(x^2/2).
Correct Answer:
A
— y = Ce^(x^2/2)
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Q. What is the solution to the equation 2(x - 3) = 8? (2023)
Solution
Expanding gives 2x - 6 = 8. Adding 6 gives 2x = 14, thus x = 7.
Correct Answer:
C
— 7
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Q. What is the solution to the equation 2x - 4 = 10? (2023)
Solution
Adding 4 to both sides gives 2x = 14. Dividing by 2 gives x = 7.
Correct Answer:
D
— 6
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Q. What is the solution to the equation 4x + 8 = 24? (2023)
Solution
Subtracting 8 from both sides gives 4x = 16. Dividing by 4 gives x = 4.
Correct Answer:
C
— 6
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Q. What is the solution to the equation 4x - 8 = 0?
Solution
Adding 8 to both sides gives 4x = 8. Dividing by 4 gives x = 2.
Correct Answer:
A
— 2
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Q. What is the solution to the initial value problem dy/dx = 4y, y(1) = 2?
-
A.
y = 2e^(4x)
-
B.
y = 2e^(4x-4)
-
C.
y = e^(4x)
-
D.
y = 4e^(x)
Solution
The general solution is y = Ce^(4x). Using y(1) = 2, we find C = 2e^(-4).
Correct Answer:
B
— y = 2e^(4x-4)
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Q. What is the specific heat capacity of a substance if 500 J of heat is required to raise the temperature of 2 kg of the substance by 10°C? (2021)
-
A.
25 J/kg°C
-
B.
50 J/kg°C
-
C.
75 J/kg°C
-
D.
100 J/kg°C
Solution
Specific heat capacity (c) = Q / (m * ΔT) = 500 J / (2 kg * 10°C) = 25 J/kg°C.
Correct Answer:
B
— 50 J/kg°C
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Q. What is the sum of the coefficients in the expansion of (2x - 3)^4?
Solution
To find the sum of the coefficients, substitute x = 1: (2*1 - 3)^4 = (-1)^4 = 1. The sum of coefficients is 81.
Correct Answer:
B
— 81
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Q. What is the sum of the coefficients in the expansion of (x + 1)^4?
Solution
The sum of the coefficients in the expansion of (x + 1)^4 is (1 + 1)^4 = 2^4 = 16.
Correct Answer:
C
— 16
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Q. What is the sum of the coefficients in the expansion of (x + 1)^8?
-
A.
256
-
B.
512
-
C.
128
-
D.
64
Solution
The sum of the coefficients in the expansion of (x + 1)^n is given by (1 + 1)^n = 2^n. Here, n=8, so the sum is 2^8 = 256.
Correct Answer:
B
— 512
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Q. What is the sum of the complex numbers z1 = 2 + 2i and z2 = 3 - 4i?
-
A.
5 - 2i
-
B.
5 + 2i
-
C.
1 - 2i
-
D.
1 + 2i
Solution
To find the sum, we add the real parts and the imaginary parts: (2 + 3) + (2 - 4)i = 5 - 2i.
Correct Answer:
A
— 5 - 2i
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Q. What is the sum of the complex numbers z1 = 2 + 3i and z2 = 4 - 2i?
-
A.
6 + i
-
B.
6 + i
-
C.
2 + 5i
-
D.
8 + i
Solution
The sum of two complex numbers z1 + z2 = (2 + 3i) + (4 - 2i) = (2 + 4) + (3 - 2)i = 6 + i.
Correct Answer:
A
— 6 + i
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Q. What is the sum of the first five prime numbers?
Solution
The first five prime numbers are 2, 3, 5, 7, and 11. Their sum is 2 + 3 + 5 + 7 + 11 = 28.
Correct Answer:
A
— 28
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Q. What is the sum of the interior angles of a hexagon? (2022)
-
A.
720 degrees
-
B.
540 degrees
-
C.
360 degrees
-
D.
180 degrees
Solution
Sum of interior angles = (n-2) * 180° = (6-2) * 180° = 720 degrees
Correct Answer:
A
— 720 degrees
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Q. What is the sum of the interior angles of a pentagon?
-
A.
360°
-
B.
540°
-
C.
720°
-
D.
180°
Solution
The sum of the interior angles of a polygon is given by (n-2) * 180°, where n is the number of sides. For a pentagon, n = 5, so (5-2) * 180° = 540°.
Correct Answer:
B
— 540°
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Q. What is the sum of the interior angles of a triangle formed by three intersecting lines?
-
A.
180 degrees
-
B.
360 degrees
-
C.
90 degrees
-
D.
270 degrees
Solution
The sum of the interior angles of any triangle is always 180 degrees.
Correct Answer:
A
— 180 degrees
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Q. What is the sum of the interior angles of a triangle? (2019)
-
A.
90 degrees
-
B.
180 degrees
-
C.
270 degrees
-
D.
360 degrees
Solution
The sum of the interior angles of any triangle is always 180 degrees.
Correct Answer:
B
— 180 degrees
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Q. What is the sum of the roots of the equation 2x^2 - 8x + 6 = 0? (2022)
Solution
Using Vieta's formulas, the sum of the roots is -(-8)/2 = 4.
Correct Answer:
A
— 4
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Q. What is the sum of the roots of the equation x² - 5x + 6 = 0? (2022)
Solution
The sum of the roots is given by -b/a = 5/1 = 5.
Correct Answer:
A
— 5
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Q. What is the sum of the squares of the roots of the equation x^2 - 5x + 6 = 0?
Solution
The sum of the squares of the roots is given by (sum of roots)^2 - 2(product of roots). Here, sum = 5, product = 6. So, 5^2 - 2*6 = 25 - 12 = 13.
Correct Answer:
B
— 19
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Q. What is the synonym of 'abundant'?
-
A.
scarce
-
B.
plentiful
-
C.
meager
-
D.
insufficient
Solution
'Abundant' means plentiful or existing in large quantities. Therefore, the synonym is 'plentiful'.
Correct Answer:
B
— plentiful
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Q. What is the synonym of 'candid'?
-
A.
deceitful
-
B.
honest
-
C.
reserved
-
D.
secretive
Solution
'Candid' means truthful and straightforward; frank.
Correct Answer:
B
— honest
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Q. What is the synonym of 'elated'?
-
A.
depressed
-
B.
joyful
-
C.
angry
-
D.
anxious
Solution
'Elated' means in high spirits; extremely happy and excited.
Correct Answer:
B
— joyful
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Q. What is the synonym of 'frugal'?
-
A.
extravagant
-
B.
thrifty
-
C.
wasteful
-
D.
lavish
Solution
'Frugal' means being economical or avoiding waste, making 'thrifty' the synonym.
Correct Answer:
B
— thrifty
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Q. What is the synonym of 'gregarious'?
-
A.
shy
-
B.
sociable
-
C.
reserved
-
D.
antisocial
Solution
'Gregarious' means fond of company; sociable.
Correct Answer:
B
— sociable
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Q. What is the synonym of 'meticulous'?
-
A.
careless
-
B.
thorough
-
C.
negligent
-
D.
sloppy
Solution
'Meticulous' means showing great attention to detail; very careful and precise.
Correct Answer:
B
— thorough
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