Initial $Q_2=0, Q_1=0, Q_0=0$
Clock $1:$
- $Q_2=1$ $[J =$ ( old $Q_0)'=1, K=1,$ New $Q2=$ Complement of old $Q2=1]$
- $Q_1 =0$ $[D =$old $Q_2=0,$ new $Q1= D =0]$
- $Q_0=0$ $[T=$ old $Q1=0,$ New $Q_0 = $old $Q_0 =0]$
Clock $2:$
- $Q_2=0$ $[J =$ ( old $Q_0)'=1, K=1,$ New $Q2=$ Complement of old $Q2=0]$
- $Q_1 =1$ $[ D =$old $Q_2=1,$ new $Q1= D =1]$
- $Q_0=0$ $[ T=$ old $Q_1=0,$ New $Q_0 = $old $Q_0 =0]$
Clock $3:$
- $Q_2=1$ $[J =$ ( old $Q_0)'=1, K=1,$ New $Q_2=$ Complement of old $Q2=1]$
- $Q_1 =0$ $[D =$ old $Q_2=0,$ New $Q_1= D =0]$
- $Q_0=1$ $[T= $ old $Q1=1,$ New $Q_0 =$ complement of old $Q_0 =1]$
Clock $4:$
- $Q2=0$ $[J =($old $Q_0)'=0, K=1$, new $Q_2=$ Reset$=0]$
- $Q1 =1$ $[D =$old $Q_2=1$, new $Q_1= D =1]$
- $Q0=1$ $[T= $old $Q_1=0$, new $Q_0 = $old $Q_0 =1]$
After $4$ clock pulses $Q2Q1Q0$ is $011$
Note : for JK flipflops, $Q_{(t+1)} = JQ' +K'Q$, for D flipflops, $Q_{(t+1)} = D$, and for T flipflops $Q_{(t+1)}= T\oplus Q $ Where $Q_{(t+1)}$ represent new value of $Q.$