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

190×38÷4=?

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

If ' n ' be any natural number , then by which number ( n⁴-n ) is always divisible ? 

The total number of integers between 100 and 200, which are divisible by both 9 and 6, is 

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

9.5 % of 720 + 1.5 % of 320 = ? 

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

Direction : What should come in place of the question (?) in the following question.

12 × 3.5 – 8.5 × 3.2 =?