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Question

Using the properties of determinant and without expanding , prove that:
∣ ∣276538755986∣ ∣=0

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Solution

∣ ∣276538755986∣ ∣R1R1R2R2R2R3R3R3R2∣ ∣111021112111∣ ∣R1R1R2R2R2+R3∣ ∣1010002111∣ ∣1(00)0+1(00)=0

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