Direction : What value should come in the place of question mark (?) in the following questions?

$${210\over14}×{17\over15}×?=4096  $$

The students of a class donated Rs. 3, 481 towards relief fund. Each student donated an amount qual to the number of students in the class. The number of students in the class is: 

While solving a problem, by mistake, Anita squared a number and then subtracted 25 from it rather than first subtracting 25 from the number and then squaring it. But she got the right answer. What was the given number? 

1, 3, 5, 7, ………total average of 25^th number  is:

The greatest number that can be subtracted from 10000 so that the remainder may be divisible by 32, 36, 48 and 54 is:

The value of $${3.157×4126×3.198\over63.972×2835.121}$$ is closest to : 

The sum of three numbers is 252. If the first number is thrice the second and third number is two-third of the first, then the second number is

If the number x3339 is divisible by 11, what is the face value of x?