How many meaningful English words can be made with the letters of NDOE using each letter only once in each word ?

Which one of the following statements regarding Shooting Stars is incorrect ?

The following small letters are coded by capital letters in a certain way :
s u m l a d
R A P M S O
Now, which small letters can be decoded from the letters given below :
M A P S R O

A group of alphabets are given with each being assigned a number. These have to be unscrambled into a meaningful word and correct order of letter may be indicated from the given responses.
YMLOSBCI

Unscramble the following letters to frame a meaningful word and find out the correct numerical sequence of the letters.
E → 1
S → 2
R → 3
T → 4
A → 5
R → 6
U → 7
N → 8
A → 9
T → 10

Letters given in the first line have codes as in the second line.
X → 8
C → 4
Y → 1
O → 6
M → 2
G → 0
I → 9
R → 3
Q → 5
V → 7
How will the letters VGIXRM be coded?

In a certin code the following numbers are coded in a certain way by assigning signs:
1 → %
2 → x
3 → -
4 → +
5 → >
6 → <
7 → ∧
8 → ∨
9 → $
Which number can be decoded from the following?
> $ x ∨ % 

A school bus driver starts from the school, drives 2 km. towards North, takes a left turn and drives for 5 km. he then takes a left turn and drives for 8 km. before taking a left turn again and driving for further 5 km. The driver finally takes a left turn and drives 1 km. before stopping. How far and towards which direction should the driver drive to reach the school again?

Town D is 13 Km. towards the East of town A. A bus starts from town A travels 8 Km. towards West and takes a right turn. After taking the right turn, it travels 5 Km. and reaches town B. From town B the bus takes a right turn again, travels 21 Km. and stops. How far and towards which direction must the travel to reach town D?

Rajesh starting from his house, goes 4 km. in the East, then he turns to his right and goes 3 km. What is his final distance from his house?