Q. Consider the matrices P, Q and R which are 10 x 20, 20 x 30 and 30 x 40 matrices respectively. What is the minimum number of multiplications required to multiply the three matrices?

  • (A) 18000
  • (B) 12000
  • (C) 24000
  • (D) 32000
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βœ… Correct Answer: (A) 18000
Explanation: the minimum number of multiplications are 18000. this is the case when the matrices are parenthesized as (p*q)*r.

Explanation by: Mr. Dubey
the minimum number of multiplications are 18000. this is the case when the matrices are parenthesized as (p*q)*r.

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