A bag contains 5 five-rupee coins 8 two-rupee coins and 7 one-rupee coins If four coins are drawn from the

5C4/20C4=1/969

5C4 because maxi possible amount and it possible only when all 5 rs coin will be selected.

20c4 because total 20 coin and we have to select only 4 coin
11 years agoHelpfull: Yes(1) No(3)
to draw max u hv to choose 4 five rupee...(5c4)(favourable outcome)....total outcome=20c4..the reqd probability is 5c4/20c4...thank u
11 years agoHelpfull: Yes(1) No(2)
5C4 / 20C4 = 1:969
11 years agoHelpfull: Yes(1) No(0)
5C4/(20C4-5)
5/4840
1/968
11 years agoHelpfull: Yes(0) No(0)
a.............
11 years agoHelpfull: Yes(0) No(1)
the ansr is optn a..
the total no. of coins=20 so 4 randomly droppd so the combinatin of coins are 5c4..
from the total no. of coins 20c4
i.e 5c4/20c4=[(5*4*3*2)/(1*2*3*4)]/[(20*19*18*17)/(1*2*3*4)] so
5/4840....then the ansr is 1/968
11 years agoHelpfull: Yes(0) No(4)
ANS:a
total number of combinations are :20
we select four coins in these 24 so :20c4
we select odd number and maximum amount so we select 5 rupee coins because odd conditions are 5 and 1 rupee coins but we select maximum amount so we select 5 rupee coins so 5c4
maximum possible amount is =>5c4/20c4
10 years agoHelpfull: Yes(0) No(0)

A bag contains 5 five-rupee coins, 8 two-rupee coins and 7 one-rupee coins. If four coins are drawn from the bag at random, then find the odds in favour of the draw yielding the maximum possible amount.
option
a. 1:968
b. 968:969
c. 1:969
d. 969:968