Test SeriesFree PYQsExamsPricing

JEE Advanced Mathematics question

MathematicsDeterminantsJEE Advanced

If

=the total number of arrangements of 4 different things, taking at least one at a time,

then is equal to

Answer: (D)

Solution

The determinant is upper-triangular, so it equals the product of the diagonal entries: . Arrangements of 4

See the full step-by-step solution

Create a free account to read the complete working (3 steps), and practise questions like this in a timed test.

Create a free account

Question ID VK-109921