Number Series Ques 123

Question-

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

$5 \quad 16 \quad 49 \quad 104 \quad ? \quad 280 $

(1) 165

(2) 160

(3) 171

(4) 181

(5) 175

Show Answer

Correct Answer: (4)

Solution: (4)

The pattern is:

$5+11=16$

$16+33(=3 \times 11)=49$

$49+55(=5 \times 11)=104$

$104+77(=7 \times 11)=181$

$181+99(=9 \times 11)=280$