Quote:
Originally Posted by muhammad bilal khankhel
it square of 1 2 3 4 5 6 7 8 9 so the answer is 16 i-e 4square
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main khua makhua next odd number plus karta jaa raha tha
, but that logic also worked to 81
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1+3=4+5=9+7=
16+9=25+11=36+13=49+15=64+17=81