Sequences and S...

The unit's place digit in $$(1446)^{4n + 3}$$ is

From 0 to 9 , four digited numbers can be formed such that
the digits  are in ascending order is

If $$p:q:r=1:2:3\;then$$ $$\sqrt {5{p^2} + {q^2} + {r^2}} $$ is equal to: 

$$7$$ boys and $$8$$ girls have to sit in a row on $$15$$ chairs numbered from $$1$$ to $$15$$ then?

The three digits in 10! are:

Replace the question mark (?) with the correct option.

A is a set containing n elements. A  subset P of A is chosen. The set A is reconstructed by replacing the element of P.A subset Q of A is again chosen. The number of way of choosing P and Q so that P Q =$$\phi $$ is :- 

Find: $$6,25,62,123,(?),341$$

Let $$5 < n_1 < n_2 < n_3 < n_4$$ be integers such that $$n_1+n_2+n_3+n_4=35$$. The number of such distinct arrangements $$(n_1, n_2, n_3, n_4)$$.

Select the missing number from the given responses ?