Question
1
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Find the rule from the table below:

A
Subtract 2

B
Subtract 1
The correct answer is "Subtract 1".
Please Note:
Subtraction is the operation that decreases a number by taking away from it.
Solution:
To find the correct rule, we consider the given table.
We observe that the given rule makes each number decrease. This implies subtraction.
We try subtracting 1 from each input number:
8  1 = 7
2  1 = 1
4  1 = 3
10  1 = 9
On subtracting 1 from the input numbers, we get the corresponding output numbers.
So, the rule is “subtract 1”.