Number System Part 2 for Railway Group D In Hindi & English

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                             Divisibility

>> Divisibility में अक्सर किस तरह के प्रश्न पूछे जाते हैं

* 2553 बताओगे 2,3,4,5…. किससे Divisible है

* 365a/4 है तो a कि Value बताओ

(a) 531 (B) 324 (C) 454 (D) 1320

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>Divisible by 2 –

If unit digit is zero or divisible by 2

>What is unit digit?
The last number of the Digit Is Called Unit Digit

Example – 45826, 155228, 25780….

> Divisible by 3

Some of all digit divisible by 3

Example – 2553 => 2+5+5+3 = 15

> Divisible by 4

If last two digits is divisible by 4

Example – 2652

2652 – 52/4 = 13

> Divisible by 5

If unit digit is zero or 5

Example – 50, 55, 65, 58654585625

> Divisible by 6

Divisible by 2 and should be an even number

Divisible by 3 and sum of digits divisible by 3

Example – 4536

4536 – 4+5+3+6 = 18/3 = 6

4536 is Divisible By 6