321:9::512:15:841:40:751:?
thank you so much for helping me and giving such a clear explanation
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321= 3 x (2 + 1 ) =3x3 =9
512 = 5 x ( 1 + 2) = 5x (3) =15
841 = 8 x (4+1) = 8x 5 =40
751 = 7 x (5+1) =7 x 6 =42
512 = 5 x ( 1 + 2) = 5x (3) =15
841 = 8 x (4+1) = 8x 5 =40
751 = 7 x (5+1) =7 x 6 =42
thank you so much for helping me and giving such a clear explanation
nice explanation
Similar questions
512 = 5 x ( 1 + 2) = 5x (3) =15
841 = 8 x (4+1) = 8x 5 =40
751 = 7 x (5+1) =7 x 6 =42