1. How many distinct terms are there in the expansion of (x+y+z+w)^n

a.4060
b.5456
c.27405
d.46376

Answer: Formula for the no of terms in the expansion is

=[n+(m-1)!]/[n!(m-1)!]
where n= power of the exapansion here n=30
m= no of terms in the expansion here m=4

solve according to the formula..........