For a BJT the common base current gain $\alpha$ = 0.98 and the collector base junction reverse bias saturation current I_CO 0.6$\mu A$. This BJT is connected in the common emitter mode and operated in the active region with a base drive current I_B = 20XA. The collector current I_C for this mode of operation is

$\text{We have} \hspace{2cm} \alpha = 0.98 \\ \text{Now} \hspace{2.7cm} \beta = \frac{\alpha}{1 - \alpha} = 4.9 \\ \text{In active region, for common emitter amplifier,} \\ I_C = \beta I_B + (1 + \beta) I_{CO} \\ \text{Substituting} I_{CO} = 0.6 \mu A \hspace{0.2cm} and \hspace{0.2cm} I_B = 20 \mu A \text{in above eq we have,} \\ I_c = 1.01 mA$