Question

write the divisibility rules of 2,4,3,5,6,8,9,10,11​

Answer 1

Step-by-step explanation:

1

Any integer (not a fraction) is divisible by 1

2

The last digit is even (0,2,4,6,8)

128  Yes

129  No

3

The sum of the digits is divisible by 3

381 (3+8+1=12, and 12÷3 = 4) Yes

217 (2+1+7=10, and 10÷3 = 3 1/3) No

This rule can be repeated when needed:

99996 (9+9+9+9+6 = 42, then 4+2=6) Yes

4

The last 2 digits are divisible by 4

1312 is (12÷4=3) Yes

7019 is not (19÷4=4 3/4) No

A quick check (useful for small numbers) is to halve the number twice and the result is still a whole number.

12/2 = 6, 6/2 = 3, 3 is a whole number. Yes

30/2 = 15, 15/2 = 7.5 which is not a whole number. No

5

The last digit is 0 or 5

175  Yes

809  No

6

Is even and is divisible by 3 (it passes both the 2 rule and 3 rule above)

114 (it is even, and 1+1+4=6 and 6÷3 = 2) Yes

308 (it is even, but 3+0+8=11 and 11÷3 = 3 2/3) No8

The last three digits are divisible by 8

109816 (816÷8=102) Yes

216302 (302÷8=37 3/4) No

A quick check is to halve three times and the result is still a whole number:

816/2 = 408, 408/2 = 204, 204/2 = 102 Yes

302/2 = 151, 151/2 = 75.5 No

9

The sum of the digits is divisible by 9

(Note: This rule can be repeated when needed)

1629 (1+6+2+9=18, and again, 1+8=9) Yes

2013 (2+0+1+3=6) No

10

The number ends in 0

220  Yes

221  No

11If you sum every second digit and then subtract all other digits and the answer is: 0 or divisible by 11Example: 1364 ((3+4) - (1+6) =0) & 3729 ((7+9) - (3+2) = 11)

Answer 2

Answer:

Rules For 2 are:-

Numbers in unit place are always even no.

Rules For 3 are :-

Sum of the given number should be is divisible by 3.

Rules For 4 are :-

Sum of last two number should be divisible by 4.

Rules For 5 are :-

Numbers in unit place should be 5 and 0 .

Rules For 6 are :-

Same as 3.

Rules For 8 are :-

Same as 2 and 4.

Rules For 9 are :-

Same as 3 and 6.

Rules For 10 are :-

Number in unit place always have 0.

HOPE IT HELPS.

Branist Mark Dena na bhulna.

Good Afternoon.