Elitmus
Exam
Numerical Ability
Probability
10 Bananas, 7 apples and 9 Oranges to be chosen from their respective baskets, such that at least one fruit is chosen from each basket.
Read Solution (Total 13)
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- for 10 bananas we hv 11 choice( 0,1,2,3,4,5,6,7,8,9,10)
similarly 7 apple in 8 ways. & 9 oranges in 10 ways.
total ways. 11*8*10=880
there is one way where no fruit is choosen.
then 880-1 = 879.
- 10 years agoHelpfull: Yes(35) No(24)
- in question it is given that at least one fruit is chosen from each basket,so no ways are there to choose zero no of fruit.
so
10*7*9=630. - 10 years agoHelpfull: Yes(34) No(10)
- ans 1
bananas are identical.. so 10 bananas can be chosen in only 1 way..somiliarly for apples and oranges...so ans sud be 1 - 10 years agoHelpfull: Yes(10) No(7)
- @NAUTIYIL bro u r wrong, coz u hv made yur ans for d case, no. of ways fruits can be taken out, when atlest 1 fruit choosen. (bt qus is when atleast 1 fruit is chosn frm EACH BASKET)..........
So,ans should be 10*7*9=630 (no choice to choose nill in each basket). - 10 years agoHelpfull: Yes(5) No(1)
- 11*8*10-1=880-1=879
- 10 years agoHelpfull: Yes(4) No(5)
- rahul nauityal is right
- 10 years agoHelpfull: Yes(3) No(3)
- 10!*7!*9!*3!
- 10 years agoHelpfull: Yes(1) No(3)
- If ram draws 1 then Sam has 22 choices. If ram draws 2 then Sam has 21 choices and so on..
So, the probality that Sam has drawn a card greater than Ram is
=> 1/23*22/23 + 1/23*21/23 + 1/23*20/23 + .... + 1/23*1/23
=> 1/23*[(22+21+...+10)/23]
=> 1/23*{22/2*[1+22]}/23
=> 252/529 or 84/143
- 10 years agoHelpfull: Yes(1) No(1)
- (11*8*10)-1
- 10 years agoHelpfull: Yes(0) No(1)
- each frit has two chances i.e either taken or not total number ways for atleast one fruit from each basket is (2^10-1)*(2^7-1)(2^9-1)
- 10 years agoHelpfull: Yes(0) No(1)
- 11*8*10=880
=880-7
=873 - 9 years agoHelpfull: Yes(0) No(0)
- 630 will be the answer
- 9 years agoHelpfull: Yes(0) No(0)
- because in the case of "879" you have considered the case of 0 banana or 0 apple or 0 mango.....
but the question is saying that there is no option of choosing nill from any basket.... - 9 years agoHelpfull: Yes(0) No(0)
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