Question 8911 – ISRO CS 2020

Consider product of three matrices M₁,M₂ and M₃having w rows and x columns, x rows and y columns, and y rows and z columns. Under what condition will it take less time to compute the product as (M₁M₂)M₃ than to compute M₁(M₂M₃)?

Correct Answer: B

Question 40 Explanation:

Always take the same time

((1/x)+(1/z))<(1/ω+1/y)

x>y

(w+x)>(y+z)

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