Replace y by a suitable digit so that 61y6 is divisible by 3
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The sum of the digits should be divisible by 3
therefore y can be equal to
2,5,8
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number is divisible by 3 if sum of digits divisible by 3
6+1+y+6
13+y
substitute y =2
13+2 =15 it is divisible by 3
substitute y=5
13+5=18 is divisible by 3
substitute y=8
13+8=21 is divisible by 3
so y may be 2,5,8 is answer
if it is least value 2 is answer
6+1+y+6
13+y
substitute y =2
13+2 =15 it is divisible by 3
substitute y=5
13+5=18 is divisible by 3
substitute y=8
13+8=21 is divisible by 3
so y may be 2,5,8 is answer
if it is least value 2 is answer
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