Question
A glass jar contains 6 white, 8 black, 4 red and 3 blue
marbles. If a single marble is chosen at random from the jar, what is the probability that it is black or blue?Solution
Total number of marbels in the jar = 6 + 8 + 4 + 3 = 21 probability that it is black or blue = 1 - 10/21 = 11/21
More Previous year papers Questions
- Select the number from among the given options that can replace the question mark (?) in the following series.
17, 18, 22, 31, 47, ___ - Which letter-cluster will replace the question mark (?) in the following series?
RGV, UME, ?, AYW, DEF - A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.
57, 59, 56, 61, 54, ___ - Which letter-cluster will replace the question mark (?) in the following series?
NPQR, OORQ, PNSP, ____, RLUN - Which letter and number cluster will replace the question mark (?) to complete the given series?
LT6, KU12, IW24, FZ48, ____
