What single-digit number replaces the "?" below to go in the middle of the following set of numbers?
1, 8, 10, ?, 8, 3, 11
What number should come in place of the question mark below?
Solve this 5 boxes puzzle, what will be the value of the middle box in 3rd set ?
3 rational numbers form a geometric progression in its current order.
Find the numbers?