00390nam a22001457a 4500020001800000082002200018100001300040245006200053260003400115300001900149650002500168650001500193650002400208700001200232  a9789353168483  a658.4033  bDAS/B  aDas, N G  aBusiness mathematics and statistics/cN G Das and J K Das  aChennai:bMcGraw Hill,c2020.  a292p. ;b18cm.  aBusiness Mathematics  aStatistics  aBusiness Statistics  aDas J K