MCQs

Q111: nC3 = nC10 then n = ____?

• A) 10
• B) 13
• C) 30

Q112: What is the nth term of A.P 1, 3, 5, 7, _____?

• A) n
• B) n²
• C) 2n - 1

Q113: A group (G, *) is said to be abelian if a * b = ____?

• A) a * b
• B) a - b
• C) b * a

Q114: If A = [a b] then what is the order of matrix A?

• A) 1x1
• B) 1x2
• C) 2x1

Q115: Sum of all the cube roots of unity is?

• A) One
• B) Two
• C) Zero

Q116: √-98 = _____?

• A) 7√2i
• B) 4√7i
• C) 49i

Q117: If z = i then (z bar)² = ____?

• A) -1
• B) -i
• C) i

Q118: A vector in which the initial point is not specified is called _____ vectors.

• A) Null
• B) Free
• C) Unit

Q119: i²¹ + i²⁷ + i³⁰ = ____?

• A) -i
• B) i
• C) -1

Q120: For any two sets A and B if A∩B= B∪A then?

• A) A = B
• B) A ≠ B
• C) A