Question

write the least number which has to be added to 4378 to make it divisible by 9​

Answer 1

Answer:

5

Step-by-step explanation:

For a number to be divisible by 9, the sum of the digits should be divisible by 9.

(Example: 81. 8+1= 9. it is divisible by 9)

4378

Sum of the digits = 4+3+7+8 = 22

We know that 27 is the closest to 22 which is divisible by 9.

Hence 22+x= 27

x= 27-22= 5

So, 5 is the least number to be added to 4378 to make it divisible by 9

(NOTE : In cases where you don't know whether the number is divisible by 9 or not, add all the numbers. In cases where the results give 3 or 4 digit numbers add those too until it comes down to a one digit number. If this one digit number is 9, then the number is divisible by 9

Example : 1368

1+3+6+8 = 18 (1+8 = 9) so the number is divisible by 9.

Example : 562806

5+6+2+8+0+6 = 27 (2+7=9) so the number is divisible by 9

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