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Question

The greatest decimal among 3.109,3.019,3.099 and 3.19


A

3.109

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B

3.019

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C

3.099

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D

3.19

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Solution

The correct option is D

3.19


Step I: Compare the place value of the very first digit of the numbers in the left most side.

In the given numbers 3.109,3.019,3.099 and 3.19.the first digit in the left most side is same for all the numbers which is 3 and its place value is also same on all the numbers which is at the units place.

Step II: If the place value of the first digit at the left most side is same then check for its face value.

The face value of the left most digits of 3.109,3.019,3.099 and 3.19 is same which is 3.

Step III: Repeat the steps for the next digit until the left most side numbers are sorted or the desired number is filtered out.

In the given numbers 3.109,3.019,3.099 and 3.19

3 is same in all the numbers, after the decimal the digits are 1,0 and 9 the number having 1as the next digit is greater than the one having 0.

Going on to the next step the numbers that have the potential to be the greatest are 3.109,3.19.

Clearly 9>0, so 3.19>3.109

Thus the correct option of the above question is D.


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