Question

1×2+3×4+5×6+7×8+9×10=?

Answer 1

as per question = 1*2+3*4+5*6+7*8+9*10

                           =2+12+30+56+90
                            
                            =190

Hope its useful ..!!!!!!!!

Answer 2

heya mate
here is ur answer
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=190
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hope it will help u