Question and Answers Forum

All Questions      Topic List

Algebra Questions

Previous in All Question      Next in All Question      

Previous in Algebra      Next in Algebra      

Question Number 94705 by s.ayeni14@yahoo.com last updated on 20/May/20

a set X had one more subset than set Y.  If X has 8 more subsets than Y. Find the number if element in the set X.

asetXhadonemoresubsetthansetY.IfXhas8moresubsetsthanY.FindthenumberifelementinthesetX.

Commented by prakash jain last updated on 20/May/20

I think your question is not  correct  If a set has n element then it  has 2^n  subsets.  If Y haz k elements  X has 1 more element than Y  then X has k+1 elements  X has 8 more subsets than Y  2^(k+1) =2^k +8  ⇒k=3  set X has k+1=4 elements

IthinkyourquestionisnotcorrectIfasethasnelementthenithas2nsubsets.IfYhazkelementsXhas1moreelementthanYthenXhask+1elementsXhas8moresubsetsthanY2k+1=2k+8k=3setXhask+1=4elements

Terms of Service

Privacy Policy

Contact: info@tinkutara.com