# If A is a square matrix of order ‘n’ and I is the unit matrix of the same order, then AI is equal to

Question: If A is a square matrix of order ‘n’ and I is the unit matrix of the same order, then AI is equal to A. a B. ia C. i D. both (a) & (b) Answer» d. both (a)…

# If the determinant formed by the elements of the matrix A is equal to zero, then the matrix is

Question: If the determinant formed by the elements of the matrix A is equal to zero, then the matrix is A. skew symmetric B. symmetric C. singular D. non-singular Answer» c. singular Note: The above multiple-choice question is for all…

# If two sets contain the same distinct elements, then they are called

Question: If two sets contain the same distinct elements, then they are called A. equal sets B. unequal sets C. equivalent sets D. all the above Answer» a. equal sets Note: The above multiple-choice question is for all general and…

# A square matrix A such that A2 = A is called

Question: A square matrix A such that A2 = A is called A. orthogonal matrix B. skew symmetric matrix C. idempotent matrix D. singular matrix Answer» c. idempotent matrix Note: The above multiple-choice question is for all general and Competitive…

# A set containing no element is called

Question: A set containing no element is called A. null set B. empty set C. void set D. all the above Answer» d. all the above Note: The above multiple-choice question is for all general and Competitive Exams in India.

# The value of the dependent variable where the graph cuts the y-axis is called

Question: The value of the dependent variable where the graph cuts the y-axis is called A. x-intercept B. y-intercept C. slope D. none of these Answer» b. y-intercept Note: The above multiple-choice question is for all general and Competitive Exams…

# Find the co-factor A23 of the matrix A =

Question: Find the co-factor A23 of the matrix A = A. 23 B. 7 C. -23 D. -7 Answer» d. -7 Note: The above multiple-choice question is for all general and Competitive Exams in India.

# Determinant of a 3X3 square matrix is called —– determinant

Question: Determinant of a 3X3 square matrix is called —– determinant A. first order B. second order C. third order D. fourth order Answer» c. third order Note: The above multiple-choice question is for all general and Competitive Exams in…

# “Null set is a proper subset of all the non-null sets”. This statement is

Question: “Null set is a proper subset of all the non-null sets”. This statement is A. always true B. sometimes true C. never true D. true subject to some conditions Answer» a. always true Note: The above multiple-choice question is…

# Union of A with A, that is, A U A =

Question: Union of A with A, that is, A U A = A. complement of a B. a itself C. cannot be determined D. none of these Answer» b. a itself Note: The above multiple-choice question is for all general…