Observe the number pattern and Fill in the blanks: 1 = 1
1+2+1 = 2+2
Id
= 3+3+3
1+2+3+4+3+2+1
5+5+5+5+5
2.
1+2+3+4+5+6+5+4+3+2+1
1+2+1 = 2+2
Id
= 3+3+3
1+2+3+4+3+2+1
5+5+5+5+5
2.
1+2+3+4+5+6+5+4+3+2+1
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