Read the numbers and decide what the next number should be. 20, 30, 40, 50, 60, 70,…?

Solution:

The sequence is the group or sequential arrangement of numbers in a particular order or set of rules.

The given sequence is 20, 30, 40, 50, 60, 70,…

The difference between them is

30 - 20 = 10

40 - 30 = 10

50 - 40 = 10

60 - 50 = 10

70 - 60 = 10

So the next number can be found by adding 10 to 70

70 + 10 = 80

Therefore, the next number should be 80.

Example - Read the numbers and decide what the next number should be. 20, 40, 60, 80,…?

Solution:

The sequence is the group or sequential arrangement of numbers in a particular order or set of rules.

The given sequence is 20, 40, 60, 80,…

The difference between them is

40 - 20 = 20

60 - 40 = 20

80 - 60 = 20

So the next number can be found by adding 20 to 80

80 + 20 = 100

Therefore, the next number should be 100.

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Read the numbers and decide what the next number should be. 20, 30, 40, 50, 60, 70,…?

Summary:

The next number in 20, 30, 40, 50, 60, 70,… should be 80.