Bank Preparation
Bank Math
Probability, Permutation and Combination
ব্যাংক নিয়োগ
Combined Bank
Combined 9 Banks & 2 Financial Institution Post: Senior Officer(05-12-2025)
Combined 9 Banks & 2 Financial Institution Post: Senior Officer(05-12-2025)
А bоx contains 3 blue, 2 white, and 4 red marbles. If one marble is drawn at random, what is the probability that it will not be a white marble?
বিকল্পসমূহ (নিজের উত্তর যাচাই করতে ক্লিক করুন):
সঠিক উত্তর
1 (7/9)
বিস্তারিত ব্যাখ্যা ও বিশ্লেষণ:
Solution:
Given that,
Blue marbles = 3
White marbles = 2
Red marbles = 4
∴ Total marbles = 3 + 2 + 4 = 9
And, number of non-white marbles = Blue + Red = 3 + 4 = 7
We know,
P(not white) = favorable outcomes/total outcomes
= 7/9
