Sequences

Which is the missing number? $1131,\ 1231,\ 1331,\ ?,\ 1531$  

What number come next? $9844,\ 9744,\ 9644,$  

Find the missing number $5648,\ ?,\ 7648,\ 8648$  

Find the missing number $9845,\ ?,\ 9825,\ 9815,\ 9805$  

Find the missing number $15,\ 13,\ 11,\ ?,\ 7,\ 5$  

Find the missing number $-18,\ -11,\ ?,\ 3,\ 10$  

Find the missing number $?,\ -5,\ -1,\ 3,\ 7$  

What is the next number in this sequence 4, 8, 12, ......, 20?

• 10

• 16

• 18

12, ..........., 32, 42, 52. The missing number is;

• 22

• 23

• 24

58, 51, 44, ......., 30. The missing number is;

• 40

• 37

• 35