If bmatrix 1&1 0&1 bmatrix bmatrix 1&2 0&1 bmatrix bmatrix 1&3 0&1 bmatrix bmatrix 1&n-1 0&1 bmatrix =...

Question

If bmatrix 1&1 0&1 bmatrix bmatrix 1&2 0&1 bmatrix bmatrix 1&3 0&1 bmatrix bmatrix 1&n-1 0&1 bmatrix = bmatrix 1&78 0&1 bmatrix , then the inverse of bmatrix 1&n 0&1 bmatrix is:

Accepted Answer

(D)

JEE Main 2019 Mathematics question

Solution