In a row of trees, one tree is fifth from either end of the row. How many trees are there in the row?

In a queue, amrita is 10th from the front while Mukul is 25th from behind and mantra is just in the middle of the two. If there are 50 persons in the queue. What position does mantra occupy from the front?

Raman ranks sixteenth from the top and forty nine from the bottom in a class. How many students are there in the class?

If Arun finds that he is twelfth from the right in a line of boys and fourth from the left, how many boys should be added to the line such that there are 28 boys in the line?

Read the following information and answer the questions given below:
i. A finance companys office has 3 windows W1, W2 and W3 for handling various transactions.
ii. W1 is open the between 10 a.m. and 2 p.m. on Monday, Wednesday and Thursday and between 2.30 p.m. and 4.30 p.m. on Tuesday, Friday and Saturday.
iii. W2 is open between 9 a.m. and 12 noon on Tuesday, Thursday and Friday and between 1 p.m. and 3 p.m. on Monday, Wednesday and Saturday.
iv. W3 is open between 8 a.m. and 11 a.m. on Monday, Tuesday and Thursday and 12 noon and 12 p.m. on Wednesday, Friday and Saturday.
On which day, more than one windows are not open simultaneously at any given time?

Study the following information and answer the questions given below:
i.25 boy-scouts bearing names from A to Y were standing in a row. The teacher wanted to select various teams from among them. He gave them random number from 3 to 8 a shown below:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
4 4 6 3 5 4 3 3 5 6 7 5 8 3 8 7 7 8 4 8 7 4 5 6 6
If he decides to pick up those exclusive pairs of adjacent boys whose numbers if totaled turn out to be exactly 12, how many such pairs would be available?

Answer these questions referring to the letter sequence given below:
N O P Q Y B Z A R S H I J K L M T U V G F E W X D C
What will come in place of question mark (?) in the following series?
NDP, QWB, ZFR, ?

Answer these questions referring to the letter sequence given below:
N O P Q Y B Z A R S H I J K L M T U V G F E W X D C
If it is possible to make a meaningful word from the eighth, sixteenth, seventeenth and twenty-second letters from your left in the given series, which will be the first letter of that word? If no such word can be formed, your answer would be X, and if more than one such word can be formed, answer is P.

If it is possible to make a number which is the square of a two-digit odd number using the second, the fourth and the sixth digits of the number 93217648 and using each only once. Which of the following that two-digit odd number?

If * stands for ‘addition’, / stands for ‘subtraction’, + stands for ‘multiplication’, and – stands for ‘division’, then 20*8/8-4+2 = ?