Counting & ProbabilityMedium ShareCounting & Probability · Medium problemHow many terms appear in the expansion of (a+b+c+d)5(a + b + c + d)^{5}(a+b+c+d)5 after collecting like terms?A(5+4−15)\binom{5+4-1}{5}(55+4−1)B(5+4−16)\binom{5+4-1}{6}(65+4−1)C−(5+4−15)-\binom{5+4-1}{5}−(55+4−1)D(10+4−15)\binom{10+4-1}{5}(510+4−1)Check Show answer Walk through it step by step Practice more like this