Question

9^15+9^16 сумма этих чисел каким цифром закончится​

Answer 1

Ответ:

2058911320946490

Пошаговое объяснение:

Вот

Answer 2

Вынесем множитель $9^{15}$ за скобки:

$9^{15}+9^{16}=9^{15}(1+9)=10 \cdot 9^{15}$

Один из множителей — десятка, поэтому число оканчивается на ноль.

Answer 3

Calculation of 9^15 and 9^16

To calculate the values of 9^15 and 9^16, we can use the exponentiation rule that states that the power of a number raised to another power is equal to the product of the exponents.

So, 9^15 can be calculated as follows: 9^15 = 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9

Similarly, 9^16 can be calculated as: 9^16 = 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9 * 9

Let's calculate these values:

9^15 = 205,891,132,094,649 9^16 = 1,853,020,188,851,841

Sum of 9^15 and 9^16

To find the sum of these two numbers, we can simply add them together:

205,891,132,094,649 + 1,853,020,188,851,841 = 2,058,911,352,283,490

Last Digit of the Sum

To determine the last digit of the sum, we only need to consider the last digit of each number being added. The last digit of 9^15 is 9, and the last digit of 9^16 is also 9. Adding two numbers with the same last digit will always result in a number with the same last digit.

Therefore, the sum of 9^15 and 9^16 will end with the digit 9.