If 999x + 888y = 1332 and 888 x + 999y = 555.then the value of (x + y) is-

What value will come in place of question mark (?) in the questions given below?

(4425÷25) ×(8.5×16) = ?

4⁶¹ + 4⁶² + 4⁶³ + 4⁶⁴ is divisible by: 

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

$$ \sqrt{1089} + 3=(?)^2 $$

The least number that must be subtracted from 1294 so that the remaining number when divided by 9, 11, 13 will leave in each case the same remainder 6 is:

When 3738, 5659 and 9501 are divided by the greatest possible number x, the remainder in each case is y. What is the sum of x and y?

Sum of two numbers is 15 and sum of their reciprocals is $$ {15\over56}$$. The two numbers are

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

$$({144\over16}×{828\over 9})=?+325 $$