The total number of ways of selecting 4 letters from all the letters of the word TSEAMCET is

Let $a, b, c \in N$ and $a+b+c=5$. Let $L, M$ be the least and greatest values of $2^a 3^b 5^c$, respectively. Then $M-L=$

The number of positive divisors of 360 which are multiples of 3 is

The number of ways of arranging the letters of the word LINEAR so that the letters N and R do not come together and E and A come together is