Number Series Ques 42

Question-

What will come in place of the question mark (?)

$50 \quad 81 \quad 121 \quad 172 \quad 236\quad ?$

(1) 392

(2) 309

(3) 361

(4) 379

(4) 315

Show Answer

Correct Answer: (5)

Solution: (5)

The pattern is :

$50+31=81$

$81+40(=31+9)=121$

$121+51(=40+11)=172$

$172+64(=51+13)=236$

$236+79(=64+15)=315$