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JEE Questions for Maths Equations And Inequalities Quiz 1 - MCQExams.com
JEE
Maths
Equations And Inequalities
Quiz 1
log
4
2 - log
16
2 + log 2 - ... is equal to
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0%
e2
0%
loge 2 + 1
0%
loge 3 - 2
0%
1 - loge 2
x, y, z are +ve real numbers and x + y + z = 1/2 then
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0%
0%
2)
0%
0%
none of these
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x > y
0%
x < y
0%
x = y
0%
None of these
The equation x + 2y + 2z = 1 and 2x + 4y + 4z = 9 have
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Only two solutions
0%
Only one solution
0%
Infinite number of solutions
0%
None of these.
Given that, a, b ϵ {0,1,2...9} with a + b ≠ 0 and
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0%
1
0%
1/2
0%
1/3
0%
1/4
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0%
1
0%
2
0%
3
0%
4
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0%
7
0%
4
0%
2
0%
1
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0%
1
0%
2
0%
3
0%
4
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0%
√2 -3
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2 + √2
0%
2 - √2
0%
6 - 2√2
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0%
254
0%
192
0%
292
0%
66
0%
62
Solution of the equation
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3
0%
2
0%
3/2
0%
2/3
The number of digits in 20
301
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0%
602
0%
301
0%
392
0%
391
If x, y and z are real and different and u = x
2
+ 4y
2
+ 9z
2
– 6yz – 3zx – 2xy, then u is always.
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non negative
0%
zero
0%
non positive
0%
none of these
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are real and negative
0%
have negative real parts
0%
both (a) and (b)
0%
none of these
If (x,y) is the solution of the following equations (2x)
log2
= (3y)
log3
and 3
logx
= 2
logy
, then x is equal to
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0%
1/6
0%
1/3
0%
1/2
0%
6
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0%
1
0%
2
0%
0
0%
- 1
The sequence
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a GP
0%
an AP
0%
a HP
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both a GP and a HP
If log
3
2, log
3
(2
x
-and log
3
(2
x
- 7/are in AP, then x is equal to
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0%
8
0%
3
0%
- 8
0%
- 3
The approximate value of ∛28 is
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0%
3.0037
0%
3.037
0%
3.0086
0%
3.37
Both the roots of the equation (x – b) (x – c) + (x – a) (x – c) + (x – a) (x – b) = 0 are always
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0%
positive
0%
real
0%
negative
0%
none of these.
The value of log
2
20 . log
2
80 - log
2
5 . log
2
320 is
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0%
5
0%
6
0%
7
0%
8
0%
10
If log
5
log
5
log
2
χ = 0, then the value of χ is
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0%
32
0%
125
0%
625
0%
25
The number of solutions of log
4
( χ -= log
2
( χ - 3 )
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0%
3
0%
1
0%
2
0%
0
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0%
10
0%
2
0%
– 0.01
0%
none of these.
If a, b, c are distinct positive numbers each being different form 1 such that (log
b
a . log
c
a -log
a
a) + (log
a
b . log
c
b - log
b
b) + (log
a
c . log
b
c - log
c
c) = 0, then abc is equal to
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0%
0
0%
e
0%
1
0%
2
0%
3
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a = b
0%
a = b/2
0%
2a = b
0%
a = b/3
If a
x
= b
y
= c
z
= d
w
, then the values of
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0%
loga(bcd)
0%
loga (abc)
0%
logb(cda)
0%
logc(dab)
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0%
0
0%
1
0%
- 1
0%
2
The solution set of the equation
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{4, 1/4}
0%
{2,1/2}
0%
{1,2}
0%
{8,1/8}
The value of
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0%
0
0%
1
0%
2
0%
100!
If a, b, c ≠ 0 and belong to the set {0,1,2,3...9}, then
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0%
1
0%
2
0%
3
0%
4
The value of a, so that the sum of squares of the root of the equations χ
2
- (a -χ - a + 1 = 0 assume the least value, is
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0%
2
0%
0
0%
3
0%
1
Let f(χ )=2χ
2
+ 5χ + 1. If we write f(χ ) as f(χ ) = [a (χ +(χ —+ b (χ -(χ -+ c(χ - 1)(χ + 1)] for real numbers a,b and c, then
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0%
there are infinite numbers of choices for a, b and c
0%
only one choice for a but infinite numbers of choices for b and c
0%
exactly one choice for each of a, b and c
0%
more than one but finite number of choices for a, b and c
If α and β are the roots of the equation aχ
2
+ bx + c = 0 and S
n
= α
n
+ β
n
and a S
n+1
+ b S
n
+ c S
n-1
is equal to
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0%
0
0%
abc
0%
a + b + c
0%
None of these
If the roots of the equation aχ
2
+ bχ + c = 0 are of the form
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b2 - 4ac
0%
b2 - 2 ac
0%
2b2 - ac
0%
If (x
2
+ px +is a factor of (ax
3
+ bx + c), then
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a2 + c2 = – ab
0%
a2 – c2 = – ab
0%
a2 – c2 = ab
0%
none of these
If α , β and γ are the roots of the equation χ
3
+ 4χ + 2 = 0, then α
3
+ β
3
+ γ
3
is equal to
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0%
2
0%
6
0%
- 2
0%
- 6
If the product of the roots of the equation χ
2
- 2 √2kχ + 2e
2logk
- 1 = 0 is 31, then the roots of the equation are real for k, is equal to
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0%
- 4
0%
1
0%
4
0%
0
Let p and q be real numbers such that p ≠ 0, p
3
≠ q and p
3
≠ - q. If α and β are non - zero complex numbers satisfying α + β = - p and α
3
+ β
3
= q, then a quadratic equation having α/β and α/β as its roots is
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(p3 + q)χ2 - (p3 + 2q)χ + (p3 + q ) = 0
0%
(p3 + q)χ2 - (p3 - 2q)χ + (p3 + q ) = 0
0%
(p3 - q)χ2 - (5p3 - 2q)χ + (p3 - q ) = 0
0%
(p3 - q)χ2 - (5p3 + 2q)χ + (p3 - q ) = 0
If χ
2
+ pχ + q = 0 has the roots α and β, then the value of (α - β)
2
is
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0%
p2 - 4q
0%
(p2 - 4q)2
0%
p2 + 4q
0%
(p2 + 4q)2
If the roots of the equation χ
2
- bχ + c = 0 are two consecutive integers, then b
2
- 4c is equal to
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0%
- 1
0%
0
0%
1
0%
2
0%
3
If α and β are the roots of the quadratic equation ⋋(χ
2
- χ) + χ + 5 = 0 and ⋋
1
, ⋋
2
are two values ⋋ obtained from
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0%
4192
0%
4144
0%
4096
0%
4048
If 2 - r is a root of the equation aχ
2
+ 12χ
2
+ b = 0(where,a and b are real), then the value of ab is
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0%
45
0%
15
0%
- 15
0%
- 45
0%
25
If α and β are the roots of χ
2
- 2χ + 4 = 0, then thevalue of α
6
+ β
6
is
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0%
32
0%
64
0%
128
0%
256
If α ,β and γ are the roots of χ
3
+ 4χ + 1 = 0, then the equation, whose roots are
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χ3 - 4χ - 1 = 0
0%
χ3 - 4χ + 1 = 0
0%
χ3 + 4χ - 1 = 0
0%
χ3 + 4χ + 1 = 0
The number of real solutions of the equation | x |
2
– 3 | x | + 2 = 0 is
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0%
4
0%
1
0%
3
0%
2
If α ,β and γ are such that α + β + γ = 2, α
2
+ β
2
+ γ
2
= 6, α
3
+ β
3
+ γ
3
= 8 then α
4
+ β
4
+ γ
4
is equal to
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0%
7
0%
12
0%
18
0%
36
Let the two numbers have arithmetic mean 9 and geometric mean 4. Then, these numbers are the roots of the quadratic equation
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χ2 - 18χ - 16 = 0
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χ2 - 18χ +16 = 0
0%
χ2 + 18χ - 16 = 0
0%
χ2 + 18χ + 16 = 0
If α and β are the roots of the equations χ
2
- (1 + n
2
)χ+ 1/2(1 + n
2
+ n
4
) = 0, then α
2
+ β
2
is equal to
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0%
n2
0%
- n2
0%
n4
0%
- n4
If α and β are the roots of χ
2
- 2χ cos ∅ + 1 = 0, then the equation, whose roots are α
n
+ β
n
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χ2 - 2 χcos n∅ - 1 = 0
0%
χ2 - 2 χcos n∅ + 1 = 0
0%
χ2 - 2 χsin n∅ + 1 = 0
0%
χ2 + 2 χsin n∅ - 1 = 0
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