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zamur1
@zamur1
July 2022
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вычислить 1/6*7+1/7*8+...+1/48*49+1/49*50.
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Denik777
Verified answer
1/6*7+1/7*8+...+1/48*49+1/49*50=
=(1/6-1/7)+(1/7-1/8)+...+(1/48-1/49)+(1/49-1/50)=
=1/6-1/50=11/75;
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Verified answer
1/6*7+1/7*8+...+1/48*49+1/49*50==(1/6-1/7)+(1/7-1/8)+...+(1/48-1/49)+(1/49-1/50)=
=1/6-1/50=11/75;