Class XII Determinants Quiz 3

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Question 1

Without expanding value of the determinant is-

• A(p – r) (q – r)
• B(q – r) (p – q)
• C0
• DNone of these

Question 2

If D = for x ≠ 0, y ≠ 0 then D is

• Adivisible by x but not y
• Bdivisible by y but not x
• Cdivisible by neither x nor y
• Ddivisible by both x and y

Question 3

The value of Δ = is equal to

• Ap + q
• Ba + b + c
• Cx + y + z
• D0

Question 4

Let a, b, c be such that b(a + c) ï 0. If = 0, then the value of n is

• AZero
• Bany even integer
• Cany odd integer
• Dany integer

Question 5

Co-factors of element of the second row of the determinant are-

• A39, 3, 11
• B–39, 3, 11
• C39, –3, 11
• D39, 3, –11

Question 6

If ΔABC is a scalene triangle, then the value of is

• A= 0
• B≠ 0
• Ccannot say
• DNone of these

Question 7

The value of D = is

• A0
• B30^x
• C30^-x
• Dnone of these

Question 8

The value of Δ = is

• A0
• B30^x
• C30^-x
• Dnone of these

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