Answer
Combination with smallest positive potential
$2Ag^{+} + Cu → 2Ag + Cu^{2+}$
Total cell potential = 0.799 - 0.337 = 0.462
$3Ni^{2+} + 2Cr → 3Ni + 2Cr^{3+}$
Total cell potential = -0.28 + 0.74 = 0.46
Work Step by Step
Given above