Question

ANSWER FAST PLEASE

Answer 1

Answer:

B.18

Step-by-step explanation:

2+1+3

3+3=6

6+5=11

11+7=18

Answer 2

11 - 6 = 5
6 - 3 = 3
3 - 2 = 1
Notice how all the differences is an odd number. The number after 11 needs have a difference of 7 when subtracted so it would be B. This sequence is an arithmetic sequence.
Answer: 18
Hope you learned something new! :D