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like this question 12 and 21 their square is 144 and 441
13 ka square 169 and 31 ka square 13 ke square ka reverse h 961. thus 12^2= 144 and 21^2 =441
13 ka square 169 and 31 ka square 13 ke square ka reverse h 961. thus 12^2= 144 and 21^2 =441
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