Question

Which of the following could be a valid DEA registration number. Select more than one.

A.) AB6746543

B.) MR1254894

C.) BL9873212

Answer 1

The DEA number consists of the following

Two letters in form of alphabet (the first letter can be the designation or the type ,second letter is written from last name initial of the registrant)

Six numbers

1check digit (got by addition of 1,3,5 with 2,4,6 digits,then multiply by 2 and the number in the last places or in ones is the check digit

• AB6746543

To calculate check digit

=(6+4+5) +(7+6+4)*2

=(15+17)*2

=32*2

=64

The digit in one is 4 ,so the check digit should be 4

• MR1254894

To calculate check digit

=(1+5+8)+(2+4+9)*2

=(14+15)*2

=29*2

=58

The digit in ones is 8,so the check digit should be 8

• BL9873212

To calculate check digit

=(9+7+2)+(8+3+1)*2

=(19+12)*2

=31*2

=62

The digit in ones is 2,so the check digit should be 2

Ans:BL98733212