Question

if 2y5 is divisible by 11,where y is a number ,
find the value of y.

Answer 1

Answer:

7

Step-by-step explanation:

as we know that for divisible by 11, sum of odd placed digits = sum of even placed digit

so, y= 2+5

I. e., 7 answer.

please give me marked as Breinly answer

Answer 2

Given:

A number 2y5 is divisible by 11. y is a digit.

To Find:

The value of y such that the number will be divisible by 11 is?

Solution:

The given problem can be solved using the concept of divisibility rules.

1. For a number to be divisible by 11, the difference between the sum of the odd positioned numbers and the sum of the even positioned numbers must be a multiple of 11.

For example, The number 2420 the oddly positioned sum is 2 + 2 = 4, and the evenly positioned sum is 4 + 0 is 4. The difference is 4 - 4 = 0, 0 is a multiple of 11. Hence, 2420 is divisible by 11.

2. Consider the given number 2y5,

=> The oddly positioned sum is 2 + 5 = 7,

=> The evenly positioned sum is y,

=> The difference between y and 7 must be a multiple of 11,

=> y - 7 = 0 ( other mutiples are not possible as y is a single digit )

=> y = 7.

3. The value of y is 7.

Therefore, the number is 275, the value of y is 7.