What is the largest $4$ digit number exactly divisible by $10$ ?

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90

980

80

780

answer is B.

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Detailed Solution

We have to find the largest

4

digit number that is exactly divisible by

10

.
A number is divisible by 10 if its unit digit is 0.
Out of the given options, all numbers, 90, 980, 80, 780 are divisible by 10 as their unit digit is 0.
The largest number here that is divisible by 10 is 980.
So, option 2 is correct.

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