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Branch, Loop and Node Analyses - Engineering

Q1:

The first row of a certain determinant has the numbers 3 and 5. The second row has the numbers 7 and 2. The value of this determinant is

A 31

B –31

C 39

D –29

ANS:D - –29

Determinant formula = |ad-bc|.

Here a=3, b=5, c=7, d=2.
(3*2)-(7*5) = -29.

Answer = -29.