1.

1 \frac { 3 } { 7 } \times \frac { 5 } { 39 } \times 10 \frac { 2 } { 5 } \times 2 \frac { 1 } { 10 }

Answer»

10/3 * 5/39 * 52/5 * 21/10

= 10*5*52*21/3*39*5*10

= 52*7/39

= 364/39



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