the average of 11 no is 53. the average of six number is 50and that of the last six number is 55.the six no is
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11×53=583
1st 6 numbers 6×50=300 &
Last 6 numbers 6×55=330
So 1st 6 and last 6 numbers overwritten the 6th number. Thus,the 6th number is=(330+300)-583
=47
1st 6 numbers 6×50=300 &
Last 6 numbers 6×55=330
So 1st 6 and last 6 numbers overwritten the 6th number. Thus,the 6th number is=(330+300)-583
=47
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