4. Use the method of Gauss to find the sum. 1+2+3+4+...+1000 oma tai Idas.I

Q: 20. Let U={1,2,4,5,a,b,c,d,e}. Find the complement of the set W={1,5,e,d,a}.

A: Given sets:- U=1,2,4,5,a,b,c,d,e W=1,5,e,d,a

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A: 3x+2y-z=82x+2z=-4x+3y=4

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