JEE Main 2025 Mathematics question
Let A = be a matrix of order 3 × 3, with . If the sum of all the elements in the third row of A is , , then is equal to
Answer: (4)
Solution
Computing , sum of third row elements .
Let A = be a matrix of order 3 × 3, with . If the sum of all the elements in the third row of A is , , then is equal to
Computing , sum of third row elements .