please answer the question

answer of Q3-d Q4-b

i am not able to get the answer

3.P(Yellow in 1st)=3/6=1/2P(red in 2nd)=2/6=1/3P(blue in 3rd)=1/6Therefore required probability=1/2*1/3*1/6=1/364. P(A speaking truth and B lying)=75/100*20/100=3/20P(A lying and B speaking truth)=25/100*80/100=1/5Therefore, P(A and B contradict each other)=3/20+1/5=7/20Hence required probability=7/20*100=35%