Q. There is a five digit number
1 It has 2 prime digits (1 is not a prime number)
2 The third digit is the highest
3 The second digit is lowest
4 The first digit is 1 less that third digit
5 The fifth is half of the fourth
6 The sum of 4-th and 5-th digit is less that first What is that no?

• We know:
  prime digits= 2,3,5,7
  
  According to question;
  
  fifth is half of the fourth
  so 5th can be 1,2,4 &
  4th can be 2,4,8
  
  sum of 4-th and 5-th digit is less
  that first so can be
  (1+2) not possible as 5th=1
  but 2nd is lowest
  (2+4) or
  4+8=12 not possible as less than 1st
  so 5th digit=2, 4th digit = 4---42
  
  1st can be 7,8,9 but 3rd is highest
  so 1st can be 7,8 1st digit is 1 less that 3rd digit so
  1st digit=7,
  3rd digit=8
  7_842
  2nd is lowest so 2nd digit= 1 (as 2 is already present)
  
  So answer will be 71842
• 10 years agoHelpfull: Yes(28) No(2)
• prime digits= 2,3,5,7
  fifth is half of the fourth so 5th can be 1,2,4 & 4th can be 2,4,8
  sum of 4-th and 5-th digit is less that first so can be
  (1+2) not possible as 5th=1 but 2nd is lowest
  (2+4) or 4+8=12 not possible as less than 1st
  so 5th digit=2, 4th digit=4 ---42
  1st can be 7,8,9 but 3rd is highest
  so 1st can be 7,8 1st digit is 1 less that 3rd digit so
  1st digit=7, 3rd digit=8
  7_842
  2nd is lowest so 2nd digit= 1 (as 2 is already present)
  so no. is 71842
• 10 years agoHelpfull: Yes(13) No(3)
• 72863 2 prime numbers
  5th is half of 4th
• 10 years agoHelpfull: Yes(2) No(2)
• answer is 71842
• 10 years agoHelpfull: Yes(1) No(1)
• solution is 70942
• 10 years agoHelpfull: Yes(1) No(3)
• answer is 71842
• 10 years agoHelpfull: Yes(1) No(1)
• 5 digit num 2 prime numbers may be (2,3,5,7 )
  3rd digit highest :7,8,9=8
  2nd digit lowest :1,2,3=1
  1st digit :3rd digit -1 :7
  5th digit half of 4th :x/2=2
  4th +5th digit
• 10 years agoHelpfull: Yes(0) No(0)
• The answer is 60721 as it satisfies the conditions.
• 10 years agoHelpfull: Yes(0) No(1)
• 61742 is currect answer..
• 10 years agoHelpfull: Yes(0) No(1)
• why can't it be 70842?
• 10 years agoHelpfull: Yes(0) No(0)
• Ans- 71842
• 10 years agoHelpfull: Yes(0) No(0)
• Ans- 70842
  Sorry for the mistake earlier.
• 10 years agoHelpfull: Yes(0) No(0)
• 40521 is the ans.
• 9 years agoHelpfull: Yes(0) No(0)
• You all solve the question considering the 1st no as the 5th place no. so the ans is 71842 but if we do the reverse one then the ans is completely opposite i.e 24716. so in this type of question the answer always depends on the option
  
• 9 years agoHelpfull: Yes(0) No(0)