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

The sum of four numbers is 64. If we add 3 to the first number, 3 is subtracted from the second number, the third is multiplied by 3 and the fourth is divided by 3, then all the results are equal. What is the difference between the largest and the smallest of the original number?

The sum of the digits of a 2 digit number is 9. When 27 is added to the number, the digits get interchanged. Find the number.

The average of five consecutive number is 26, then the multiple of the first and the last number is

0.8% of a number is 31, then find the number.

Select the number triad that is analogous to the given triads.
 (64, 8, 65), (125, 27, 89)

The number which can be written in the form of n (n+1) (n+2), where n is a natural number, is: 

A man has eaten 100 grapes in 5 days. He eats 6 more grapes every day in comparison to the previous day. How many grapes did he eat on the first day?