Question

What is next? 5,11,24,51,106, .....

• A. 115
• B. 221
• C. 217
• D. 122

Answer 1

Answer:

C. 217

5x2+1 →11 11x2+2 → 24 24x2+3 → 51 51 x 2+4 →106 Next term is 106 x 2+5 = 217