Question

find the general term for 4, 11, 26, 57, 120...​

Answer 1

Answer:

Try adding 3, 4, 5, 6, 7, 8 in turn to the terms of your original sequence and see what you get. 1,4,11,26,57,120. Let us see the pattern that emerges from the series. So the next number should be 64+63 = 127+120 = 247.

Step-by-step explanation:

Answer 2

Answer:

247

Step-by-step explanation:

4×2=8+3=11

11×2=22+4=26

26×2=52+5=57

57×2=114+6=120

120×2=240+7=247