Arrange the following series in descending order:
0.72, 11.201, 0.68, 8.03, 3.007 
This proceeds in the following steps:
Step 1: We start with comparing the Whole Number Part of Decimals and decimal with the largest whole number part is to be written at first place in the order, we get:
11 is the largest whole number part of decimal 11.201 from the given series, so it is written at the first place of descending order.
Descending Order = 11.201
Step 2: Then we find a decimal whose whole number part is smaller than the whole number part of decimal selected earlier in step 1, but larger than whole number part of remaining decimals and we get:
8 is the whole number part of decimal 8.03
And it is smaller than the 11, which is the whole number part of decimal 11.201, but larger than whole number part of remaining decimals.
So 8.03 is written next to decimals 11.201 in the descending order and we get series:
Descending Order = 11.201, 8.03
Step 3: Then we find a decimal whose whole number part is smaller than the whole number part of decimal selected earlier in step 2, but larger than whole number part of remaining decimals and we get:
3 is the whole number part of decimal 3.007
And it is smaller than the 8, which is the whole number part of decimal 8.03, but larger than whole number part of remaining decimals.
So 3.007 is written next to 8.03 in the descending order and we get series:
Descending Order = 11.201, 8.03, 3.007
Step 4: Then we find a decimal whose whole number part is smaller than the whole number part of decimals selected earlier in step 3, but larger than whole number part of remaining decimals.
But, here in the given series you can see that there are two decimals having 0 as their whole number part, in such cases we will compare digits at tenths place and decimal with the smaller digit at tenths place will be at Last place and other decimal will be at 2nd Last place. So:
Decimal 0.72 has 7 at its tenths place
Decimal 0.68 has 6 at its tenths place
Since 6 is smaller than 7, so 0.68 will be at Last place and 0.72 at 2nd Last place, we get:
Descending Order = 11.201, 8.03, 3.007, 0.72, 0.68 
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