Maximize Your CSAT Score! 🧠 Divisibility Rule of 4 Explained #UPSC #Shorts

Hinzugefügt: 2026-05-07

[00:00:00]What is the maximum possible value of X so that the given number is divisible by four?

[00:00:05]Maximum possible value of X is asking.

[00:00:08]Again, divisibility rule of four here.

[00:00:10]Okay, divisibility rule of four says you have to divide the last two digit numbers. Okay, last two digit. Here there is X and two.

[00:00:18]Let's start from zero. Zero, is it divisible? Meaning, if I put zero at this X place, zero two, is it divisible by four? No. Zero two when I try to divide by four, remainder will be two.

[00:00:29]But he says divisible. So, zero is not possible. One? Yes. 12 is completely divisible. Isn't it or not? If 12 is divisible, 22 is not divisible. 32 is divisible. Again, 42 is not divisible.

[00:00:44]52 is divisible. Okay, 72 is divisible.

[00:00:47]92 is divisible. Okay, so for every 20 20 numbers, it's get divided. See, 12 divides 32, 52, 72, and 92. What is asking?

[00:00:58]What is the maximum possible value of X?

[00:01:01]Maximum possible value of X is what?

[00:01:03]Nine here.

[00:01:04]So, the number which gets divide here is 9 6 7 8 3 4 1 9 2.

[00:01:11]Okay, you might ask you how many possible values? What is their sum? What is their average? Okay, many such questions can be asked.