Crack IBPS PO : Quadratic Equation Day 5
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IBPS PO Study Planner
Quadratic Equation
No.of Questions: 10
Time : 10 minutes
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Question 1 of 10
1. Question
1 pointsCategory: AptitudeIn each of these questions, two equations (I) and (II) are given. You have to solve both the equations and give answer.
II:y√81=0
Correct
d
I: x^2^{ }=(9×9)
x=±9
II:y=√81=9
Hence, x≤y
Incorrect
d
I: x^2^{ }=(9×9)
x=±9
II:y=√81=9
Hence, x≤y

Question 2 of 10
2. Question
1 pointsCategory: AptitudeI: x^{2}17x +72=0
II: 3y^{2 }+17y+10=0
Correct
a
I: x^{2}17x +72=0
x=9,8
II: 3y^{2 }+17y+10=0
y= 5, 0.67
Hence, x>y
Incorrect
a
I: x^{2}17x +72=0
x=9,8
II: 3y^{2 }+17y+10=0
y= 5, 0.67
Hence, x>y

Question 3 of 10
3. Question
1 pointsCategory: AptitudeCorrect
d
x^(3/2)×x^(1/2)=169×81
x^2=169×81
x=±117
y= 936/8=117
Hence, x≤y
Incorrect
d
x^(3/2)×x^(1/2)=169×81
x^2=169×81
x=±117
y= 936/8=117
Hence, x≤y

Question 4 of 10
4. Question
1 pointsCategory: AptitudeI: x^{2}26x + 165=0
II: y^{2}20y+99=0
Correct
c
I: x^{2}26x + 165=0
x= 11, 15
II: y^{2}20y+99=0
y=9, 11
Hence, x≥ y
Incorrect
c
I: x^{2}26x + 165=0
x= 11, 15
II: y^{2}20y+99=0
y=9, 11
Hence, x≥ y

Question 5 of 10
5. Question
1 pointsCategory: AptitudeI: x^{2}4x221=0
II: y^{2}+2y99=0
Correct
e
I: x^{2}4x221=0
x= 13, 17
II: y^{2}+2y99=0
y= 11, 9
Hence, relationship between x and y cannot be determined.
Incorrect
e
I: x^{2}4x221=0
x= 13, 17
II: y^{2}+2y99=0
y= 11, 9
Hence, relationship between x and y cannot be determined.

Question 6 of 10
6. Question
1 pointsCategory: AptitudeII. 4y^214y18=0
Correct
3x^29x+7x21=0
3x(x3)+7(x3)=0
x=3,7/3
From II,
4y^2+4y18y18=0
4y(y+1)18(y+1)=0
y=1,9/2
Incorrect
3x^29x+7x21=0
3x(x3)+7(x3)=0
x=3,7/3
From II,
4y^2+4y18y18=0
4y(y+1)18(y+1)=0
y=1,9/2

Question 7 of 10
7. Question
1 pointsCategory: AptitudeI. 3x^2+24x27=0
II.
Correct
(e)
From I,
3x^23x+27x27=0
3x(x1)+27 (x1)=0
x=1, 9
From II,
3y^2+33y+4y+44=0
3y(y+11)+4(y+11)=0
y= 11, 4/3
Incorrect
(e)
From I,
3x^23x+27x27=0
3x(x1)+27 (x1)=0
x=1, 9
From II,
3y^2+33y+4y+44=0
3y(y+11)+4(y+11)=0
y= 11, 4/3

Question 8 of 10
8. Question
1 pointsCategory: AptitudeII. 2y^223y+38=0
Correct
(d)
From I,
17x34+2x^24x=0
2x(x2)+17(x2)=0
x=2, 8.5
From II,
2y^24y19y+38=0
2y (y2)19(y2)=0
y=2, 9.5
x≤y
Incorrect
(d)
From I,
17x34+2x^24x=0
2x(x2)+17(x2)=0
x=2, 8.5
From II,
2y^24y19y+38=0
2y (y2)19(y2)=0
y=2, 9.5
x≤y

Question 9 of 10
9. Question
1 pointsCategory: Aptitude 2x^2+15x38=0
 4y^255y+94=0
Correct
(d)
From I,
2x^24x+19x38=0
2x(x2)+19(x2)=0
x=2, 9.5
From II,
4y^28y47y+94=0
4y(y2)47(y2)=0
y=2, 11.75
Incorrect
(d)
From I,
2x^24x+19x38=0
2x(x2)+19(x2)=0
x=2, 9.5
From II,
4y^28y47y+94=0
4y(y2)47(y2)=0
y=2, 11.75

Question 10 of 10
10. Question
1 pointsCategory: Aptitude 9x^2+40x49=0
 4y^2+4y126=0
Correct
(e)
From I,
9x^29x+49x49=0
9x(x1)+49(x1)=0
x=1, 49/9
From II,
4y^2+28y24y126=0
4y(y+7)24(y+7)=0
y=7, 6
Incorrect
(e)
From I,
9x^29x+49x49=0
9x(x1)+49(x1)=0
x=1, 49/9
From II,
4y^2+28y24y126=0
4y(y+7)24(y+7)=0
y=7, 6