Question

361 : 100 : : 729 : _____​

Answer 1

Answer:

I think

Step-by-step explanation:

324

Hope it is help full

Answer 2

Given,

Two related series, 361: 100:: 729: $x$

To Find,

Value of $x$

Solution,

The relation between 361 and 100 can be derived as follows:

$361 =19^{2}$

Sum of two digits in 19 = $1+9 = 10$

The square of 10 is 100.

Thus, the second number in the series is the square of the sum of digits in the first number.

Similarly, $729 = 27^{2}$

⇒ Next number = $(2+7)^{2} =81$

Henceforth, the next number, $x$, is 81.