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

3505 × 69.89 ÷ 102 – 1699=?

Thrice the square of a natural number decreased by four times the number is equal to 50 more than the number. The number is :

The ratio of two positive numbers is 3 : 4. The sum of their squares is 400. What is the sum of the numbers?

When the integer n is divided by 7, the remainder is 3. What is the remainder if 5n divided by 7?

What is the sum of all three-digit numbers which are divisible by 20?

Direction: What is the approximate value will come in place of the question mark(?) in the following questions?
5682 ÷ 63 × 36=? ×19

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

A number when divided by 119, leaves a remainder of 19. If it is divided by 17, it will leave a remainder of: