00:01
In this question we need to find out the missing digit in each of the following code.
00:05
So here we have to find just the missing digit in the following code.
00:11
So the first code given is 0 -4800 -1 -26.
00:18
Then we have the question mark which we have to find 0 -4 -2.
00:23
So let us see how we are going to solve this.
00:26
So i will consider the first one as d1.
00:29
Similarly the second one will be d2 and so on so at last we will get this to be equals to d12 because there are 12 codes and this will be equals to d9 correct so from this what i will say now we consider three times of d1 plus d3 plus d5 d7 d9 plus d 11 plus d9 plus d 11 plus 1 times of d2, d4, so on, all the even terms, okay, until d12.
01:11
So this will be what? it comes out to be three times, 0 plus 8, 0 plus 2 plus.
01:18
I will call this d9 as x, okay.
01:22
So i'll get x plus 4 plus 1 times all the event terms.
01:27
So 4 plus 0, 1, 6, 0 and 1.
01:32
So solving this what i'm going to get.
01:34
So this is nothing but 3 times 14 plus x plus 13.
01:39
So this is 42 plus 3x plus 13, which is nothing but 42 plus 13 is 55 plus 3 times of x.
01:51
Here, 55 plus 3x must be divisible by 10.
02:04
So let us see...