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Question
1.     There are six columns of coins and there are eight 
coins in each column. One of the columns is entirely of 
fake coins and other five columns contain real coins. 
Weight of one fake coin is 1 gm more than the real coin 
which is 50 gm. How you can tell which column contains fake 
coin by single weight? 


2.You want to purchase a two wheeler. You got three options 
from the counter.

1) Pay Rs. 40,400 on single payment 

2) Pay Rs. 20,000 now and remaining by two equal annual 
installment of Rs. 11,600

3) Pay Rs. 15,000 now and remaining by three equal annual 
installment of Rs. 10,000

Which option is most attractive? (Take annual interest rate 
9%)
 Question Submitted By :: Shah
I also faced this Question!!     Rank Answer Posted By  
 
  Re: 1. There are six columns of coins and there are eight coins in each column. One of the columns is entirely of fake coins and other five columns contain real coins. Weight of one fake coin is 1 gm more than the real coin which is 50 gm. How you can tell which column contains fake coin by single weight? 2.You want to purchase a two wheeler. You got three options from the counter. 1) Pay Rs. 40,400 on single payment 2) Pay Rs. 20,000 now and remaining by two equal annual installment of Rs. 11,600 3) Pay Rs. 15,000 now and remaining by three equal annual installment of Rs. 10,000 Which option is most attractive? (Take annual interest rate 9%)
Answer
# 1
answer put  1 coin from 1st columb 2 from 2 
nd...............6 coins from  6th then weigh 
note the unit place of weight 
if machine shows 1 its first and so on...
 
Is This Answer Correct ?    0 Yes 0 No
Ankit Sood
 
  Re: 1. There are six columns of coins and there are eight coins in each column. One of the columns is entirely of fake coins and other five columns contain real coins. Weight of one fake coin is 1 gm more than the real coin which is 50 gm. How you can tell which column contains fake coin by single weight? 2.You want to purchase a two wheeler. You got three options from the counter. 1) Pay Rs. 40,400 on single payment 2) Pay Rs. 20,000 now and remaining by two equal annual installment of Rs. 11,600 3) Pay Rs. 15,000 now and remaining by three equal annual installment of Rs. 10,000 Which option is most attractive? (Take annual interest rate 9%)
Answer
# 2
Answer 2.
case 1: RS. 40,400
case 2: RS. 43,200
case 3: Rs. 45,000
Therefore, not atleast case 3,
difficult to pay Rs. 40,400
so. remaining RS. 20.000+2X(11,600)
 
Is This Answer Correct ?    0 Yes 0 No
Sandeep
 
 
 
  Re: 1. There are six columns of coins and there are eight coins in each column. One of the columns is entirely of fake coins and other five columns contain real coins. Weight of one fake coin is 1 gm more than the real coin which is 50 gm. How you can tell which column contains fake coin by single weight? 2.You want to purchase a two wheeler. You got three options from the counter. 1) Pay Rs. 40,400 on single payment 2) Pay Rs. 20,000 now and remaining by two equal annual installment of Rs. 11,600 3) Pay Rs. 15,000 now and remaining by three equal annual installment of Rs. 10,000 Which option is most attractive? (Take annual interest rate 9%)
Answer
# 3
case A: 40,400 (CASH)
case B: 45,288 [2(11,600* 9%)= (20,000+12,644+12,644)] 
case C: 47,700 [3(10,000* 9%)= (15,000+10,900+10,900+10,900)]

so most attractive option is case 'C'
 
Is This Answer Correct ?    0 Yes 0 No
Moxda
 

 
 
 
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