15. A spice is passed through two processes and the output of Process I-Grinding, transferred to Process II-Packaging. The input units in Process 1 are 7,500 kgs and the output units are 7,275 kgs, abnormal gain is 150 kgs. You are required to calculate the normal loss percentage and value of abnormal gain, if the total expenses incurred in Process I are ` 1,50,750 and scrap has realisable value of ` 3 per unit.

The value of $\displaystyle N$ in $\displaystyle N! + \frac{1}{7!} = \frac{1}{8!}$ is

A person can go from place 'A' to 'B' by 11 different modes of transport but is allowed to return to 'A' by any mode other than the one earlier. The number of different ways in which the entire journey can be completed is:

If a man travels from place A to B in 10 ways then by how many ways can he come back by another train?

If $\displaystyle \frac{n!}{10(n-1)!} = \frac{(n-1)!}{(n-3)!}$ find 'n'.

Which of the following is a correct statement.

$\displaystyle ^nP_3 = 2 \cdot ^nP_2$. Find $\displaystyle n$.