Solve Question no. 2
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z is 0 or 9
since sum of all the digits should be equal to 9
since sum of all the digits should be equal to 9
jaichaudhary52:
If z=1
sorry
i got confused between 1st and 2nd ques
Then 3+1+1+5=10 Which is not Divisible by 9
Sorry bro your answer is wrong
How'd u got extra 1??
Answered by
3
If 31z5 is a Multiple of 9 then the sum of the digits should be divisible by 9.
So,
3+1+z+5= 9+z
Hence, 9+z should be divisible by 9.
z is a single digit number, the sum should be 9 or 18. So,
z= 0 or 9
So,
3+1+z+5= 9+z
Hence, 9+z should be divisible by 9.
z is a single digit number, the sum should be 9 or 18. So,
z= 0 or 9
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