Board Paper of Class 12-Commerce 2011 Maths Delhi(SET 1) - Solutions
General Instructions:
i. All questions are compulsory.
ii. The question paper consists of 29 questions divided into three sections A, B and C. Section A comprises of 10 questions of one mark each, Section B comprises of 12 questions of four marks each, and Section C comprises of 7 questions of six marks each.
iii. All questions in section A are to be answered in one word, one sentence or as per the exact requirements of the question.
iv. There is no overall choice. However, internal choice has been provided in 4 questions of four marks each and 2 questions of six marks each. You have to attempt only one of the alternatives in all such questions.
v. Use of calculators is not permitted.
i. All questions are compulsory.
ii. The question paper consists of 29 questions divided into three sections A, B and C. Section A comprises of 10 questions of one mark each, Section B comprises of 12 questions of four marks each, and Section C comprises of 7 questions of six marks each.
iii. All questions in section A are to be answered in one word, one sentence or as per the exact requirements of the question.
iv. There is no overall choice. However, internal choice has been provided in 4 questions of four marks each and 2 questions of six marks each. You have to attempt only one of the alternatives in all such questions.
v. Use of calculators is not permitted.
- Question 1
State the reason for the relation R in the set {1, 2, 3} given by R = {(1, 2), (2, 1)} not to be transitive.
VIEW SOLUTION
- Question 2
Write the value of
VIEW SOLUTION
- Question 3
For a 2 × 2 matrix, A = [aij] whose elements are given by
VIEW SOLUTION, write the value of a12.
- Question 4
For what value of x, the matrix
VIEW SOLUTIONis singular?
- Question 5
Write A−1 for
VIEW SOLUTION
- Question 6
Write the value of
VIEW SOLUTION
- Question 7
Write the value of
VIEW SOLUTION
- Question 8
For what value of ‘a’ the vectors
VIEW SOLUTIONand
are collinear?
- Question 9
Write the direction cosines of the vector
VIEW SOLUTION
- Question 10
Write the intercept cut off by the plane 2x + y − z = 5 on x-axis.
VIEW SOLUTION
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