MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Vanya Saxena Grade: Upto college level
        

1) In how many ways we can give 5 apples ,4mangoes and 3 oranges to three persons if each may recieve none,one or more?


2)A number lock has 4 dials each dial has the digits 0,1,2,.................,9.What is the maximum unsuccessful attempts to open the lock?

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear Vanya


let 1st person get x1 appple ,x2 mangoes , x3 oranges


2nd  person get y1 appple ,y2 mangoes , y3 oranges


3rd person get z1 appple ,z2 mangoes , z3 oranges


so x1 +y1+ z1=5 ...........1


  x2 +y2 +z2 =4...............2


 x3+y3+z3 =3................3


where x1,x2,x3,y1,y2,y3.z1.z2.z3 ≥ 0


integral solution of equation 1st


5+3-1C3-1 =7C2


integral solution of equation 2nd


4+3-1C3-1 =6C2


integral solution of equation 3rd


3+3-1C3-1 =5C2


so total ways =7C26C25C2


 


2 question


each dial has 10 possibility


so total possibility=10*10*10*10


out of this one is succecful attemmpt


so mas unsuccesful attempt=9999





Please feel free to post as many doubts on our discussion forum as you can.
 If you find any question Difficult to understand - post it here and we will get you the answer and detailed solution very quickly.
 We are all IITians and here to help you in your IIT JEE  & AIEEE preparation.

 All the best.
 
Regards,
Askiitians Experts
Badiuddin

7 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies
  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: Rs. 15,900
  • View Details
Get extra Rs. 3,180 off
USE CODE: CART20
Get extra Rs. 466 off
USE CODE: CART20

Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details