Number Series 3rd

Here is an abacus. The rods have made a pattern. What number of beads are missing?

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Here is an abacus. The rods have made a pattern. What number of beads are missing?

• 
• 
• 
• 

Here is an abacus. The rods have made a pattern. What number of beads are missing?

• 
• 
• 
• 

Here is an abacus. The rods have made a pattern. What number of beads are missing?

• 
• 
• 
• 

Here is an abacus. The rods have made a pattern. What number of beads are missing?

• 
• 
• 
• 

10 12 14 16 18 20 ?

• 20

• 24

• 2

• 21

• 22

41 36 31 26 21 16 ?

• 11

• 15

• 5

• 31

• 32

20 23 19 22 18 21 ?

• 24

• 16

• 17

• 19

• 25

1.5 2.5 3.5 4.5 5.5 6.5 ?

• 7.6

• 6.6

• 5.6

• 7.0

• 7.5

53 62 71 80 89 98 ?

• 91

• 107

• 90

• 99

• 109