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Let the notes be 4x*10, 7x*20 and 4x*5 respectively.
4x*10+7x*20+4x*5 = 200
40x+140x+20x= 200
200x= 200
x= 1
Notes of Rs.10 = 4x = 4*1= 4 notes
Notes of Rs.20= 7x= 7*1= 7 notes
Notes of Rs.5= 4x= 4*1= 4 notes
Therefore Deepak has 4,7,4 notes if each domain respectively.
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