142, 251, 381, 463, .....?
OPtion
1) 527
2) 558
3) 421
4) 466
5) 574
6) 585
7) 454
8) 572
9) 432
10)None of these

• 558
  
  Add the digit and its multiplication
  142 = 1*4*2+(1+4+2) = 15 reverse is 51
  first digit in increase by 1 251
  251 = 2*5*1+(2+5+1) = 18 reverse the number 81
  first digit in increase by 1 381
  381 = 3*8*1+(3+8+1) = 36 reverse is 63
  first digit in increase by 1 463
  463 = 4*6*3+(4+6+3) = 85 reverse is 58
  first digit in increase by 1 558
• 10 years agoHelpfull: Yes(6) No(0)
• 142, 251, 381, 463, .....?
  
  
  
  1) 527
  
• 10 years agoHelpfull: Yes(2) No(2)
• can you explain how it is ????
• 10 years agoHelpfull: Yes(1) No(1)