Question

What number has to be replaced in x in number 57621x3 so that the number will
be divisible by 11 ?​

Answer 1

Answer:

6

Step-by-step explanation:

hope it helps

add digit on even places together

7+2+x

= 9+x

add digits on odd places

we

5+6+1+3

= 15

now the no to be divisible by 11

we should have

9+x - 15= 0

x=6

hope it helps

all the best

Answer 2

Answer:

x = 6

Step-by-step explanation

To make 57621x3 divisible by 11

divide the no. into odd and even    

(there is no need of odd and even like 1 is odd 2 is even etc.)

5 = odd

7 = even

6 = odd

2 = even

1 = odd

x = even

3 = odd

Now add  all the odds and evens separately

sum of odds = 5 + 6 + 1 + 3

                    = 15

sum of evens = 7 + 2 + x

                      = 9 + x

sum of evens must be equal to sum of odds so that when we subtract the sum of evens from sum of odds we get 0 which is a multiple of 11

9 + x = 15

x = 15 - 9

x = 6