Find the smallest digit by which ☐ is to be replaced so that 6021☐7 is divisible by 3?
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Answered by
0
Answer:
(i) Smallest digit
Sum of the given digits =4+6+7+2=19
∵19 is not divisible by 3
∴ Smallest digit (non-zero) is =2
(ii) Greatest digit
The greatest digit is 8
i.e., 19+8=27 which is divisible by 3
Answered by
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Answer:
The divisibility rule for 3 is that the sum of all the digits in the number should be divisible by 3.
So, 6+0+2+1+7+☐ = Multiple of 3
16 + ☐ = Multiple of 3
16 + 2 = 18 (multiple of 3)
16 + 5 = 21 (multiple of 3)
16 + 8 = 24 (multiple of 3)
There can be 3 answers to this problem :
2, 5, or 8
But, the best answer is the smallest digit
That is 2
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