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Puzzle of the Week: How can we find the Account Number of the Person?

  • Today, Aalunga has to transfer ` 1000 to the bank account of his friend X. He has written down the account number on a piece paper. But, most of you know that Aalunga is absent minded... He had forgotten to take out the paper from his trousers when he put them in the washing machine... Suddenly he remembered and took the trouser.. Alas!!! One digit of the bank account number became unreadable. The note says: 3170?4847. Aalunga called his friend over phone.. But, most of you know about Telecom... "Press * and 9 to copy the song. Charges apply..." Then, there was no reply.. The other end spoke: "The subscriber you are calling is not reachable at this moment" But, Aalunga is in hurry to transfer the money.. TNEB will switch off the power within 10 minutes.... Suddenly he remembers that a for a valid bank account number, the following rule is applicable..... It holds that the first digit times 9 + the second digit times 8 + the third digit times 7 + ...... + the nineth digit times 1 should be divisible by 11. Can you help Aalunga find the "RIGHT NUMBER"?

  • Answer:

    the missing digit is 3 3170? 4847, the missing digit is in fifth position summing up all remaining digits which are individually multiplied by 9,8,...1 respectively will yield a result of 139 now if digit is 1, 5*1=5,so 139 + 5 =144(not divisible by 11) if digit is 2, 5*2=10, 139+10= 149 (not divisible by 11) digit is 3, 5 * 3 =15,139+15=154 (divisible by 11) so 3 is missing digit

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missing digit is 3 317034847

mrwizard9090

1st number of the bank account number = 3 x 9 = 27 2nd number of the bank account number = 1x8 = 8 3rd number of the bank account number = 7 x 7 = 49 4th number of the bank account number = 0 x 6 = 0 ??????????????????????????????????????… 6th number of the bank account number = 4x4=.....16 7th number of the bank account number = 8x3= .....24 8th number of the bank account number = 4x2=........8 9th number of the bank account number = 7x1= .......7 Total: ....one hundred and thirty nine. 139 divisible by 11 = 0 The correct number is 317054847.

krishna

the minimum possible number is 3 3*9=27 1*8=8 7*7=49 0*6=0 X*5=Y 4*4=16 8*3=24 4*2=8 7*1=7 139+5X should be divisible by 11 139,144,149 are not divisible by 11 the next number divisible by 11 is 154 ie(11*14=154) so minimum number that is possible here is 3

Jai Shri Krishna

Best and safe method is call your friend and ascertain the number.

k

I am sorry for Aalunga but I will help him before TNEB decides to bring darkness in his life, Now straight into the starange formula banks are using as applied here =9* 3 + 8*1 + 7*7 + 0 + 5* x + 4 *4 +3*8 + 2*4 + 7 =27 + 8 + 49 + 16 + 24 + 8 + 7 +5x =139 + 5x Now x can take any value from 0 to 9. o ruled out for 139 is not divisible by 11 VLP rule for finding if a number is divisible by11 "If difference of sum of alternate numbers is = 0 or divisible by 11 then the number is divisible by 11" {Note: I do not know if others have found this rule, but I worked it myself long back} Sum of Alternate numbers in139 = 10 and 3 By adding 15 we get 154 which has alternate sum=5,5 Hence 3 is the secret number the washing machine had erased I think now Alangaan and Bank lived happily afterwards

VLP

9 i think???

Krrish

it's 3. anyway this is interesting! but here bank account numbers usually have 14 or 15 digits! what formula to use then?

Homemaker

I think the missing number is 0. Right number 317004847.

Sudhindra

This one has me beat by a mile.Have a Nice Day.

Raj Kish

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