Find the diff of min num of num required to form every num from 1 to 1234 and 1 to 4321.
a.9
b.7
c.4
d.3

• in 1234
  Unit place 1 to 1234 can be formed using 0 to 9 digits. i.e., 10 digits.
  10's can be formed using 0 to 9 digits. i.e., 10 digits.
  100's can be formed using 0 to 9 digits. i.e., 10 digits.
  1000's can be formed using only one digit, 1. i.e., 1 digit.
  total no of numbers required is 10 + 10 + 10 + 1 = 31.
  in 4321 it is 10 + 10 + 10 + 4 = 34.
  34-31=3
• 9 years agoHelpfull: Yes(8) No(0)
• in 1 to 1234 there are 31 numbers and 1 to 4321 34 numbers
  34-31=3
• 9 years agoHelpfull: Yes(7) No(5)
• number of digit required for create 1st digit=10
  number of digit required for create 2nd digit=10
  number of digit required for create 3rd digit=10
  number of digit required for create 4th digit for create 1234=1
  so total number=(10+10+10+1)31
  number of digit required for create 1st digit=10
  number of digit required for create 2nd digit=10
  number of digit required for create 3rd digit=10
  number of digit required for create 4th digit for create 4321=4 (As 1 to 4)
  so total number=(10+10+10+4)
  so dif (34-31)=3 so answer is d
• 9 years agoHelpfull: Yes(4) No(0)
• option 2
  p=q^1/2
  q^1/2=r^1/3
  so p*r=q^1/2*q^3/2
  =q^2
  
• 9 years agoHelpfull: Yes(2) No(4)
• Find the difference of the minimum number of numbers required to form every number from 1 to 1234 and 1 to 4321.
  
  a) 9 b) 7 c) 4 d) 3
  
  Answer : d) 3
  
  Solution :
  
  1st part :
  Unit place of a number from 1 to 1234 can be formed using 0 to 9 digits. i.e., 10 digits.
  10's place of a number from 1 to 1234 can be formed using 0 to 9 digits. i.e., 10 digits.
  100's place of a number from 1 to 1234 can be formed using 0 to 9 digits. i.e., 10 digits.
  1000's place of a number from 1 to 1234 can be formed using only one digit, 1. i.e., 1 digit.
  Therefore, total number of numbers required is 10 + 10 + 10 + 1 = 31.
  
  2nd part :
  Unit place of a number from 1 to 4321 can be formed using 0 to 9 digits. i.e., 10 digits.
  10's place of a number from 1 to 4321 can be formed using 0 to 9 digits. i.e., 10 digits.
  100's place of a number from 1 to 4321 can be formed using 0 to 9 digits. i.e., 10 digits.
  1000's place of a number from 1 to 4321 can be formed using 1 to 4 digits 1. i.e., 4 digits.
  Therefore, total number of numbers required is 10 + 10 + 10 + 4 = 34.
  Hence the required difference = 34 - 31 = 3
• 9 years agoHelpfull: Yes(2) No(0)
• can u explain me @divyanshi
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• plz explain it clearly.....
  
• 9 years agoHelpfull: Yes(0) No(0)
• plzz explain it clearly,i can't undrstnd dis solution
• 9 years agoHelpfull: Yes(0) No(0)
• 1 to 1234 the no is 31 times
  1to 4321 the no is 34 times
  now the diff 3 tims
  
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• answer is 3 i.e, option d
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