Wednesday, April 02, 2025

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              Q # 1 The set which has no proper subset is…….
              a) Universal set
              b) {∅}
              c) {{∅}}
              d) ∅


              Q # 2 How many elements are there in the set {{ a, b }}
              a) 2
              b) 1
              c) No elemet
              d) Both a & b


              Q # 3: Which of the following statement is wrong?
              a) { 1, 2} = { 2, 1}
              b) Φ⊆{{a}}
              c) { a }⊆{{a}}
              d) { a }∈{{a}}


              Q # 4: Number of elements of the power set of the set { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 } is
              a) 64
              b) 128
              c) 512
              d) None


              Q # 5 If 2m = 4x and 2w = 8x then what is m in term of w?
              a) w-1
              b) w+1
              c) 2w-1
              d) 2w+1


              Q # 6: If α and β are not real cube roots of unity then α5 + β5 + α β = ?
              a) 1
              b) -1
              c) 0
              d) 3


              Q # 7: For any integer k, ωn = …… where n = 3k+ 12.
              a) 1
              b) 0
              c) 2
              d) undefined


              Q # 8: ………… is a factor of 12x3 + 14x2 + x – 2
              a) 4x+1
              b) 3x-2
              c) x+2
              d) 3x+2


              Q # 9 The function 3x2 + 3x – p has two real roots, the roots differ by 5 find p
              a) 9
              b) 18
              c) 27
              d) 36


              Q # 10 The equation 9x2 – 30x + q =0 has two equal roots then q = ?
              a) -25
              b) 20
              c) 25
              d) 22


              Q # 11: Determine the remainder if 2x3 – 7x2 + 4x – 1 ÷ x + 3.
              a) 220
              b) 130
              c) -130
              d) None


              Q # 12: What is the equation whose roots are 1/2 and-1/6?
              a) 12x2 – 4x – 1= 0
              b) 12x2 – 4x + 1= 0
              c) 12x2 – 4x + 1= 0
              d) None.


              Q # 13 Rational numbers were introduced by
              a) Arabs
              b) Greeks
              c) Egyptians
              d) Latin


              Q # 14 If A be n rowed square singular matrix then (adjA).A = A.( adjA) = ?
              a) Identity matrix
              b) Scalar matrix
              c) Null Matrix
              d) None


              Q # 15 If A is a square matrix of the order 2 and 2│A│= 4 then 3│2A│= ?
              a) 12
              b) 64
              c) 24
              d) 32


              Q # 16: if A is a matrix of the order 3 then A (Adj A)= ?
              a) │A│2
              b) │A│.I3
              c) │Adj A│
              d) Adj(Adj A)


              Q # 17: If A,B and C are three matrices then (ABC)-1 = ?
              a) A-1 B-1 C-1
              b) C-1 A-1 B-1
              c) C-1 B-1 A-1
              d) None.


              Q# 18 If[r1=x 12 & r2=√ 2 √ 72is a singular matrix then x = ?
              a) 2
              b) 1
              c) 4
              d) 1/4


              Q # 19: The perimeter of a square is numerically greater than its area by 4, what is the diagonal of the square?
              a) 2
              b) √ 2
              c) 4
              d) 2 √ 2


              Q # 20 Which of the following statements is true?
              a) A group has more than one identity elements
              b) Each group must be an abelian group.
              c) Each groupoid is a semigroup.
              d) Each element of a group has an inverse element.


              Q # 21 Conjugate of – ω is?
              a) -w
              b) w2
              c) -w2
              d) None


              Q # 22 If a + b = 2 and ab = 1 then a3 + b3 = ?
              a) 2
              b) 3
              c) 4
              d) -2


              Q # 23 The roots of x2 – 4x + 8 = 0 are
              a) (2,2)
              b) (3,4)
              c) (2,-2)
              d) Both a & b


              Q # 24: The equation ax2 + bx + c = 0 has both roots positive iff
              a) b > 0, c > 0
              b) b < 0, c > 0
              c) c < 0
              d) b < 0, c < 0.


              Q # 25: Find solution set of │x – 3 │= 4
              a) { 5, -3 }
              b) { 7, - 1 }
              c) {- 4, 2}
              d) { 4, 2}.


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