Question 47507
Find the odds against obtaining two (2) heads in a single toss of two coins.
Is it 1/2...NO...
THERE ARE 2 POSSIBILITIES IN EACH TOSS ...PROBABILITY OF HEAD IN ONE TOSS=1/2
SAME IS CASE IN SECOND TOSS =1/2
HENCE PROBABILITY OF GETTING 2 HEADS IN 2 TOSSES =(1/2)*(1/2)=1/4
PROBABILITY AGAINST 2 HEADS =1-1/4=3/4
ODDS AGAINST 2 HEADS ARE 3/4:1/4=3:1