4 √5 + 6√5 + ½√5 =
1.23 / 2√5
2.12√5
3.21/2√5
4.2 / 3 √5
Posted Date:-2021-11-13 13:15:27
52 men can do a piece of work in 12 days. 28 men will do it in
1.65 days
2.60 days
3.56 days
4.67 days
Posted Date:-2021-11-13 11:23:20
A natural number x is chosen at random from the first one hundred natural numbers. What is the probability that (x + 100/x) > 50
1.13/20
2.3/5
3.9/20
4.11/20
Posted Date:-2021-11-13 13:19:45
A set consisting of a definite number of elements is called a
1.Null set
2.Singleton set
3.Infinite set
4.Finite set
Posted Date:-2021-11-13 13:23:58
A set is known by its _______
1.Values
2.Elements
3.Letters
4.Members
Posted Date:-2021-11-13 13:11:44
A survey showed that 63 % of the Americans like cheese whereas 76 % like apples. If x % of Americans like both cheese and apples, then find the range of x?
1.0 ≤ x ≤ 23 %
2.0 ≤ x ≤ 39 %
3.4 ≤ x ≤ 35 %
4.6 ≤ x ≤ 33 %
Posted Date:-2021-11-13 13:08:53
A triangular matrix can be
1.Upper triangular
2.Lower triangular
3.Both
4.None
Posted Date:-2021-11-13 13:21:02
A= [aij] mxn is a square matrix, if
1.m < n
2.m > n
3.m = n
4.None of these
Posted Date:-2021-11-13 13:20:34
Equation of line joining (3,1), and(9,3) using determinants are
1.x -3y =0
2.x +3y =0
3.y +3x =0
4.y -3x =0
Posted Date:-2021-11-13 13:07:16
Exogenous variables of a matrix are called
1.Endogenous variables
2.Dependent variables
3.Mixed variables
4.Independent variables
Posted Date:-2021-11-13 13:04:34
Find the Harmonic Mean between 2/3 and -4/3.
1.8/3
2.16/3
3.-8/3
4.-16/3
Posted Date:-2021-11-13 13:12:07
Find the term independent of x in the expansion of (x2 + 1/x)9
1.6 th term
2.8th term
3.7 th term
4.8th term
Posted Date:-2021-11-13 13:03:31
Find values of k if area of triangle is 4sq. units and vertices are (k, 0), (4,0), (0,2)
1.0, 8
2.8, 0
3.0, 0
4.8, 8
Posted Date:-2021-11-13 13:06:19
For which value of c are the lines parallel 2x – y=10 -cx + 2y =5
1.c =2
2.c=3
3.c=1
4.c=4
Posted Date:-2021-11-13 13:23:28
Given 5x +3y = 8, -2x +5y =10 and 3x +βy =4 . Equation I consistent for
1.β =46/33
2.β =47/33
3.β =45/33
4.β =41/33
Posted Date:-2021-11-13 13:07:49
How many 10 digits numbers can be written by using the digits 1and 2
1.10C1 + 9C2
2.210
3.10C2
4.10!
Posted Date:-2021-11-13 13:16:22
If A = cosØ -sinØ then A+ A = I, if the value of Ø sin Ø cosØ
1.Ï€/6
2.Ï€/3
3.Ï€
4.3Ï€/2
Posted Date:-2021-11-13 13:21:25
If A = {1, 2, 4} B = {2, 4, 5}, C = {2, 5} then (A – B) x (B – C)1.{(1, 2), (1, 5), (2, 5) }
2.{(1, 4)}
3.(1, 4)
4.None of these.
Posted Date:-2021-11-13 13:10:32
If A and B are two sets containing respectively m and n distinct elements. How many different relations can be defined for A and B?
1.2mn
2.2m+n
3.2m-n
4.2m/n
Posted Date:-2021-11-13 13:11:21
If A is a square matrix such that A2 = A, then (I + A )3 -7A is equal to
1.A
2.I – A
3.I
4.3A
Posted Date:-2021-11-13 13:05:30
If area of a triangle is 35sq.units with vertices (2, -6), (5,4) and (k, 4). Then k is
1.12
2.-2
3.-12, -2
4.12, -2
Posted Date:-2021-11-13 13:23:01
If f(x) = + , then f(x) is
1.An odd function
2.An even function
3.Neither odd nor even
4.None of the above
Posted Date:-2021-11-13 13:10:08
If f(x) = - then the value of 2(f(x))- 5f(x-1) + 2f(x-2) is
1.1
2.-3
3.15
4.None of these
Posted Date:-2021-11-13 13:24:47
If in a group of n distinct objects, the number of arrangements of 4 objects is 12 times the number of arrangements of 2 objects, then the number of objects is
1.10
2.8
3.6
4.None of these
Posted Date:-2021-11-13 13:15:57
If θ is the amplitude of (a + ib) / (a – ib), then tan θ=
1.2a / a2 + b2
2.(a² - b2) / (a2 + b2)
3.2ab / ( a2 - b2)
4.None of these
Posted Date:-2021-11-13 13:13:53
If log10 2 = 0.3010, then log2 10 is equal to:
1.0.6990
2.1000/301
3.699/301
4.0.3010
Posted Date:-2021-11-13 13:13:00
If nC12 + nC8 , then n=
1.20
2.12
3.6
4.30
Posted Date:-2021-11-13 12:24:11
If the matrix A is both symmetric and skew symmetric, then
1.A is a diagonal matrix
2.A is a zero matrix
3.A is a square matrix
4.None of these
Posted Date:-2021-11-13 13:22:15
If the second term of G.P. is 2 and the sum of its infinite terms is 8, then its first term is
1.1 / 4
2.1 / 2
3.2
4.4
Posted Date:-2021-11-13 13:15:03
If x ≠1, and f(x) = x + 1 / x – 1 is a real function, then f(f(f(2))) is
1.1
2.2
3.3
4.4
Posted Date:-2021-11-13 13:09:20
In how much time will Rs 3000 amount to Rs 3993 at 40% p.a compounded quarterly.
1.8 months
2.6 months
3.9months
4.11 months
Posted Date:-2021-11-13 13:17:44
Let R be a relation N define by x + 2y = 8 . The domain of R is
1.{2,4,8}
2.{2,4,6,8}
3.{2,4,6}
4.{1,2,3,4}
Posted Date:-2021-11-13 13:10:57
Matrices A and B will be inverse of each other only if
1.AB = BA
2.AB =BA = 0
3.AB =0, BA =I
4.AB = BA = I
Posted Date:-2021-11-13 13:05:58
Solve x +2y +3z =4, 2x +3y +8z =7 and x –y -9z =1 using Gauss-Jordan method
1.x=1, y=2, z=3
2.x=0, y=1, z=3
3.x=2, y=1, z=0
4.x=3, y=0, z=1
Posted Date:-2021-11-13 13:08:15
The area of a triangle whose vertices are ( 3, 8), ( -4, 2) and (5 ,1) is
1.63/2
2.51/2
3.61/2
4.55/2
Posted Date:-2021-11-13 13:22:37
The middle term of the expansion ( x -1/x )10 is
1.-252
2.-250
3.-248
4.-262
Posted Date:-2021-11-13 13:02:22
The multiplicative inverse of (-5 / 8) x (16 / 15)
1.– 2 / 3
2.2 / 3
3.-3 / 2
4.3 / 2
Posted Date:-2021-11-13 10:26:42
The number of all possible matrices of order 3x3 with each entry 0 or 1 is:
1.27
2.18
3.81
4.512
Posted Date:-2021-11-13 13:05:00
The number of different signals which can be given from 6 flags of different colours taken one or more at a time is
1.1958
2.1956
3.16
4.64
Posted Date:-2021-11-13 11:23:45
The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is
1.6
2.9
3.12
4.18
Posted Date:-2021-11-13 11:24:55
The number of positive integral solution of abc = 30 is
1.27
2.81
3.243
4.None of these
Posted Date:-2021-11-13 13:20:06
The probability that a man will live 10 years is ¼ and the probability that his wife will live 10 more years is 1/3. Then the probability that neither will be alive in 10 years as
1.5/12
2.7/12
3.½
4.11/12
Posted Date:-2021-11-13 13:04:03
The range of the function f(X) = x / |x| is
1.R - {0}
2.R – {-1, 1}
3.{-1, 1}
4.None of these
Posted Date:-2021-11-13 13:24:22
The reciprocal of a negative rational number is
1.Positive
2.0
3.1
4.Negative
Posted Date:-2021-11-13 13:14:14
The sum of all two digit numbers when divided by 4, yield unity as remainder is
1.1200
2.1210
3.1250
4.None of these
Posted Date:-2021-11-13 10:27:08
The sum of three numbers in G.P. is 35 and their product is 1000. The numbers are
1.5, 10, 20
2.20, 10, 15
3.10, 5, 0
4.20, 10, 10
Posted Date:-2021-11-13 10:26:00
The term without x in the expansion ( 2x – 1/2x2 )12 is
1.495
2.-495
3.-7920
4.7920
Posted Date:-2021-11-13 13:18:49
The twentieth term of √2, 3√2, 5√2, 7√2, … is
1.28√2
2.19√2
3.30√2
4.39√2
Posted Date:-2021-11-13 13:14:39
The value of (1+ i)(1 +i2)(1+i3)(1+ )
1.2
2.0
3.1
4.1
Posted Date:-2021-11-13 13:13:26
Two matrices A and B are said to be equal if,
1.A and B are not of same order
2.A and B are of symmetric order
3.A and B are of null order
4.A and B are of same order
Posted Date:-2021-11-13 13:21:52