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Question

The system of equations
x+2y+3z=4
2x+3y+4z=5
3x+4y+5z=6 has

A
Many solutions
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B
No solutions
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C
Unique solution
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D
None of these
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Solution

The correct option is D Many solutions
123235344xyz=456Usingrowtransformation,R3R3(R1+R2)A=123234012R2R22R1A=123012012R3R3R2A=123012000|A|=0Infinitelymanysolutionsexists

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