Total number of structurally isomeric straight carbon chain alcohols possible with the formula, C4H10O is ‘X'. Total number of structurally isomeric symmetrical ethers possible with the formula, C4H10O is ‘Y’. Difference between X and Y is

Total number of isomers (structural and stereo) = 8 ;Total number of structural isomers = 7 ;Total number of stereo isomers  = 2 ;Total number of enantiomeric pairs = 1 ;Total number of alcohols (structural and stereo) = 5 ;Total number of structurally isomeric alcohols = 4 ;Total number of structurally isomeric primary alcohols = 2 ;Total number of structurally isomeric secondary alcohols = 1 ;Total number of structurally isomeric tertiary alcohols = 1 ;Total number of structurally isomeric straight carbon chain alcohols = 2 ;Total number of structurally isomeric branched carbon chain alcohols = 2 ;Total number of stereo isomers (alcohols only) = 2 ;Total number of enantiomeric pairs (alcohols only) = 1 ;Total number of ethers (structural and stereo) = 3 ;Total number of structurally isomeric ethers = 3 ;Total number of stereo isomers (ethers only) = 0 ;Total number of enantiomeric pairs (ethers only) = 0 ;