MCQ Subject: Quantitative Aptitude

A shopkeeper marks up the cost price by 50% and sells at a 20% discount on the marked price. What is the percentage profit?

What do eigenvalues represent in the context of a matrix A when Av = λv?

A 3×3 real matrix can have _____ eigenvalues (counting multiplicities).

If the number 1313 is reduced by removing its two ‘1’s, what is the nature of the resulting number?

If 5 workers can build 3 houses in 10 days, how many days would 8 workers take to build 6 houses, assuming the same work rate?

A square matrix with n distinct eigenvalues is guaranteed to be diagonalizable because it has:

A 2×2 matrix A has two distinct eigenvalues. Which statement is necessarily true?

For matrix A = [[a, b], [c, d]], eigenvalues are found using which formula?

In a triangle with sides 7 cm and 9 cm, what can be the length of the third side?

For the matrix A = [[2, 1], [1, 3]], which of the following is an eigenvalue of A?