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PSEB Class-X Mathematics paper 2015  Set-A Time allowed: Three Hours                                                    Maximum marks-50 1)      If  =  =   then what will be the solution of pair of linear equation?   1 a)      Write the common difference of Arithmetic progression 3,1,-1,-3…... 1 b)`     Fill in the blanks(?) if D ADE ~ D ABC then =                                      ...