MathematicsMedium64×since 2002Q2930If n is the number of irrational terms in the expansion of (31/4+51/8)60{\left( {{3^{1/4}} + {5^{1/8}}} \right)^{60}}(31/4+51/8)60, then (n −-− 1) is divisible by :A30B8C7D26Check answerSkip