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CBSE Class 12 Mathematics 2026 Supplementary Paper 65/7/1 · Q81 Marksdeterminant_products

CBSE Class 12 Mathematics 2026 Supplementary Paper 65/7/1 · Question 8 (Determinants)

For order-three matrices with \(\det A=4\), \(\det B=7\), find \(\det(2AB)\).

✅ Step-by-Step Solution

Final Answer: 224
  1. Three scaled rows contribute 2³, so the determinant is 8·4·7=224.

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All Questions in CBSE Class 12 Mathematics 2026 Supplementary Paper 65/7/1

Q1Q2Q3Q4Q5Q6Q7Q8Q9Q10Q11Q12Q13Q14Q15Q16Q17Q18Q19Q20Q21Q22Q23Q24Q25Q26Q27Q28Q29Q30Q31Q32Q33Q34Q35Q36Q37Q38

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