std10-ગણિત-સ્વાધ્યાય-સોલ્યુશન-057-std-10-maths-ch-7-swadhyay-7-1-｜-dhoran-10-ganit-｜-dhoran-10-ganit-swadhyay-7-1-dakhalo-5-પ્રશ્ન-5