142 251 381 ?

M4maths Previous Puzzles

28 Oct 2010 What will be the next?

142 251 381 ?

OPtion

1) 527
2) 432
3) 421
4) 466
5) 436
6) 465
7) 454
8) 364
9) 463
10) 451

Solution

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
463

Correct Option: 9 Best Solution (0)