alleryStart learning →2 red, 2 blue identical balls; remove a red. Blind next draw: chance of red?
A1/2
B1/4
C1/3
D2/3
Answer & Solution
Correct answer: C. 1/3
After removing one red ball, one of the three remaining equally selectable balls is red.
Keep practising Data Handling
Browse all Data Handling questions for ICSE Class 8, or explore more Mathematics topics.
Related questions
Fair die: 1 or 2 wins; 3–6 loses. Compare winning and losing chances.P(A) = 0.7 and P(B) = 0.4. Compare their likelihoods.40 tosses gave 23 heads. Observed relative frequency of heads?A fair coin gave HHH. With independent tosses, next chance of H?A spinner's angle is uniform; 90° is red, rest blue. Chance of red?Choose one position of BANANA uniformly. Chance its letter is A?A bag has 1 red and 3 blue identical balls. One is drawn blindly. More likely colour?Two fair dice are rolled independently. Chance their sum is 7?