Question

Пятизначное число 39а44 делится на 36,если а совпадает с цифрой 1).6  2).4   3).5 4).7  5).2

Answer 1

Число делится на 36, если две последние цифры делятся на 4 и сумма его цифр кратна 9.
3 + 9 + a + 4 + 4 = 20 + a делится на 9, если a = 7
Ответ: 4) 7.

Answer 2

Ответ:4) 7
39744:36=1104

Answer 3

To determine whether the five-digit number 39a44 is divisible by 36, we need to check if it satisfies the conditions for divisibility by 36.

The rule for divisibility by 36 is that a number must be divisible by both 4 and 9. In this case, we can check the divisibility by 4 and 9 separately.

1. For a number to be divisible by 4, its last two digits must form a number divisible by 4. In 39a44, the last two digits are 44, which is divisible by 4 since 44 / 4 = 11.

2. For a number to be divisible by 9, the sum of its digits must be divisible by 9. Let's calculate the sum of the digits:

3 + 9 + a + 4 + 4 = 16 + a.

Now, we need to find the value of 'a' such that the sum (16 + a) is divisible by 9.

To satisfy this, 'a' should be 2, because 16 + 2 = 18, and 18 is divisible by 9 (18 / 9 = 2).

So, the correct answer is 5). 'a' should be 2 for the number 39a44 to be divisible by 36.