what is the pattern 1/3/5/7, the pattern is +2, wich is subtraction and what is subtraction , -and subtraction is not adding is making the number lower , how do we calcuate , with hand and brain and the calculater , what is adding , adding is + like we add more , what is the pattern 1/2/1/2/1/2, the pattern is +1 -1 , what are patterns , patterns are adding or subtracting or multiplying or diveding in a pattern .

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