Question

Какое число вставить? 1 = 9 = 25 =? = 81

Answer 1

1=9=25=49=81
так как эти числа являются квадратами нечетных чисел
1^2=1
3^2=9
5^2=25
7^2=49
9^2=81

Answer 2

To find the missing number in the sequence, let's look at the pattern:

1 = 9 = 25 = ? = 81

The pattern here seems to be that each number is the square of the previous one:

1 = 1^2 = 1 9 = 3^2 = 9 25 = 5^2 = 25 ? = ?^2 = Missing number 81 = 9^2 = 81

So, to find the missing number, we need to take the square root of 81:

√81 = 9

Therefore, the missing number in the sequence is 9.