MR. DEBASHIS has formed a portfolio and the characteristics of his portfolio are given below:
| Security | Sontex Ltd. | Polar Ltd. | Treasury Bill | Index Fund | 
| Weight | 0.07 | 0.25 | 0.25 | 0.43 | 
| Beta (β) | 1.72 | 0.89 | ? | ? | 
Beta of his portfolio is ?
 
MR. DEBASHIS has formed a portfolio and the characteristics of his portfolio are given below:
| Security | Sontex Ltd. | Polar Ltd. | Treasury Bill | Index Fund | 
| Weight | 0.07 | 0.25 | 0.25 | 0.43 | 
| Beta (β) | 1.72 | 0.89 | ? | ? | 
Beta of his portfolio is ?