Q. 75.0( 1 Vote )

Find square by Dw

Answer :

1/12/123/1234/234/34/4


12/2(1×2)/2(1×3)+22/2(1×4)+2(2×3)/2(2×4)+32/2(3×4)/42


1/4/10/20/25/24/16


= 1522756


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