1.

Gujjubhai has forget the ATM pin number of his debit cardWhat he remembers is the following hints ......Let's see how many of you can help him out1) it's 4 digit number2) 1st digit is Half of 3rd digit3) 2nd and 3rd digit total is 84) 4th digit equals to multiplication of 1st and 2nd digit.5) summation of all 4 digit equals to 12Find out the Atm pin number

Answer»

your answer us 4080

let the pin be a B c d

Given

  1. a=c/2
  2. b+c=8
  3. ab=d
  4. a+b+c+d=12

using 4

a+b+c+d=12

put given

  • b+c=8
  • a=c/2
  • d=ab

c/2 +8+ab=12

(c+16/2)+ab=12

put from given

  • a=c/2
  • b=8-c

c + 16 + 8c - c {}^{2} \div 2 = 12

9c - c {}^{2} = 24 - 16

c {}^{2} - 9c + 8 = 0

(c {}^{2} - 8c) - (c - 8) = 0

(c - 8)(c - 1) = 0

we get c=8 or1

but since c/2=x therefore it can't be 1

c=8

using given

  • x=c/2=8/2=4
  • b+c=8

b=8-c

b=8-8=0

  • d=ab

d=4×0=0

a b c d

4 0 8 0

Pin is 4080

plz mark me as brainliest


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