52,62,42,78,89,68,49,61,39,63,76,?

• 53
  
  (52,62,42),(78,89,68),(49,61,39),(63,76,x)
  
  In each bracket, the reverse of first and third are consecutive
  i.e (25,24),(87,86),(94,93) => (36,35)
  
  => x = reverse of 35 = 53
• 11 years agoHelpfull: Yes(75) No(3)
• ans :- 53
  (52,62,42),(78,89,68),(49,61,39),(63,76,x)
  
  52+10=62
  62-20=42
  
  78+11=89
  89-21=68
  
  49+12=61
  61-22=39
  
  similarly
  63+13=76
  76-23=53
  
  ans is 53
• 11 years agoHelpfull: Yes(52) No(0)
• ans is 53
  look three numbers pair first 52,62,42 the diffrence of 52 and 62 is 10 and diffrence of 52 and 42 is 10.second pair 78,89,68 diffrence of 78,89 is 11 and diffrence of 78,68 is 10.thired pair 49,61,39 the diffrence of 49,61 is 12 and diffrence of 49,39 is 10. so the diffrence between first two digits became +1 and second two digits diffrence is fixed=10.so in the fourth pair 63,76,?diffrence of 63,76 is 12 as first three pairs so the diffrence of 63,? is 10 and ans is=53.
  
• 11 years agoHelpfull: Yes(16) No(1)
• Two ways you can solve this one way is as Vinay said
  53
  
  (52,62,42),(78,89,68),(49,61,39),(63,76,x)
  
  In each bracket, the reverse of first and third are consecutive
  i.e (25,24),(87,86),(94,93) => (36,35)
  
  => x = reverse of 35 = 53
  
  Next one is consider (52,62,42)= take the middle term 62-52=10.Then add 10 to the following number and subtract it with the middle number so 10+10=20.62-20=42
  Similarly (78,89,68)= (89-78=11 so 11+10=21 then 89-21=68) and finally (63,76,?)=76-63=13, 13+10=23 so 76-23=53..This is the correct answer this is simple but not simpler than the first one I guess
• 11 years agoHelpfull: Yes(5) No(0)
• 52-42=10;
  78-68=10;
  49-39=10;
  63-x=10............so x=53
• 10 years agoHelpfull: Yes(3) No(0)
• (62-52=10,62-42=20)
  (89-78=11,89-68=21)
  (61-49=12,61-39=22)
  (76-63=13,76-?=23)
  Ans: 53
• 11 years agoHelpfull: Yes(1) No(0)
• (52,62,42)
  52+10=62,52-10=42
  
  (78,89,68)
  78+11=89,78-10=68
  
  (49,61,39)
  49+12=61,49-10=39
  
  (63,76,?)
  63+13=76,63-10=53
  ans:53
• 11 years agoHelpfull: Yes(1) No(0)
• ans = 53
  52,(52+10),(62-20)
  78,(78+11),(89-21)
  49,(49+12),(61-22)
  63,(63+13),(76-23)
• 11 years agoHelpfull: Yes(0) No(0)
• 53 is correct answer
• 7 years agoHelpfull: Yes(0) No(0)