S. 147 : Reassessment-After the expiry of four years-Information from DDIT (Inv)-Accommodation entries-Bogus capital gains and losses-Penny stock scrips-Original assessment proceedings transaction was treated as bonafide-Even if it was assumed that Assessing Officer had committed a mistake, still, assessment could not have been reopened to remedy error-Reassessment notice and order disposing the objection was quashed. [S. 45, 69, 148, Art. 226]