SOLUTION: Please help me solve this question, from a jar containing 15 marbles, each marble is marked with a number (1 to 15). marbles are then drawn randomly from the jar 6 times with rep

Algebra ->  Probability-and-statistics -> SOLUTION: Please help me solve this question, from a jar containing 15 marbles, each marble is marked with a number (1 to 15). marbles are then drawn randomly from the jar 6 times with rep      Log On


   



Question 417916: Please help me solve this question,
from a jar containing 15 marbles, each marble is marked with a number (1 to 15). marbles are then drawn randomly from the jar 6 times with replacement(x1 x2 x3 x4 x5 x6), what is the probability that the number marked on the first marble is less than the number marked on the sixth marble?(x1x6).

Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

total possible ways = 15*15 = 225
no. of ways when number marked of the first is less than number marked on the fifteen = ( 1 + 2 + 3 + .....+ 14 ) = 105

required probability = 105 / 225
= 7/15