What is the value of 1×1!+2×2!+3!×3!+............n×n!;

where n! means n factorial or n(n−1)(n−2)...1

Correct Answer : D

## Realated Questions

36 identical chairs must be arranged in rows with the same number of chairs in each row. Each row must contain at least 3 chairs and there must be at least 3 rows. A row is parallel to the front of the room. How many different arrangements are possible?

How many different five-letter words can be formed using the letter from the world APPLE?

A local delivery company has three packages to deliver to three different homes. if the packages are delivered at random to the three houses, how many ways are there for at least one house to get the wrong package?