Question

for what value of x the number 231x3 will be divisible by 3 .
please answer correct.​

Answer 1

Step-by-step explanation:

as per the divisibility rule of 3

the sum of 2,3,1,x and 3 must be divisible by 3.

2+3+1+x+3 is divisible by 3

=) 9+x is divisible by 3

after 9, '12,15,18' are divisible by 3

therefore the possible values of x are:-

3,6,0 and 9

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Answer 2

Step-by-step explanation:

• Given no. = 231x3
• According to divisibility rule of 3 :
• Sum of the digits in the no. should be divisible by 3
• Now.., 2 + 3 + 1 + x + 3 = 9+x
• Since., 9 is divisible by 3
• Therefore .., x is a single digit no. that can be divisible by 3
• x= 3,6,9