Question

find all the possible values of X for which the number 71x is divisible by 3. Also,find all such numbers​
with full solution and explanation

Answer 1

Step-by-step explanation:

71x is divisible by 3 then the sum of its digits should be also divisible by 3

7+1+x =8 +x ,must be divisible by 3

The no. can be divisible by 3 in the following cases:

8 + x=9 or x= 1

then the no. is= 711

8 + x= 12 or x= 4

then the no. is= 714

8+x= 15 or x= 6

then the no is = 716

8+ x=18 or x= 9

then the no. is= 719

Answer 2

Answer:

Pleae mark me as BRAIN-LIS

Step-by-step explanation:

71x is divisible by 3 then the sum of its digits should be also divisible by 3

7+1+x =8 +x ,must be divisible by 3

The no. can be divisible by 3 in the following cases:

8 + x=9 or x= 1

then the no. is= 711

8 + x= 12 or x= 4

then the no. is= 714

8+x= 15 or x= 6

then the no is = 716

8+ x=18 or x= 9

then the no. is= 719