Sonia has 20 rupees. She bought One rupee, two rupee and a five rupee stamp. They are different in numbers. Since the shop keeper did not have change he gives 3 one rupee stamps to Sonia. So how many stamp(s) does Sonia have now.

1) 10
2) 12
3) 8
4) 6
5) 9

• As Shopkeeper gives her 3 one rupees stamps, she might have purchased 17 Rs. stamps out of 20 Rs.
  With the combination of (1 Rs, 2 Rs, 5 Rs) , purchased stamps of 17 Rs. can be
  (1,3,2) (2,5,1) (3,2,2) (4,4,1) (5,1,2) (6,3,1) (8,2,1) (10,1,1)
  So Total of these stamps+3 one Rs. stamps=Total stamps with Sonia
  6+3=9, 8+3=11, 7+3=10, 9+3=12, 10+3=13, 11+3=14, 12+3=15
  So among the given option 9, 10 or 12 total stamps can be correct.
• 8 years agoHelpfull: Yes(1) No(0)
• 9 stamps
  1 rupee-3
  2 -3
  5 rupee -2
• 8 years agoHelpfull: Yes(0) No(2)
• Since in the question its stated that She bought One rupee, two rupee and a five rupee stamp
  - meaning we have one rs 5 stamp. From the following we can understand
  As Shopkeeper gives her 3 one rupees stamps, she has purchased stamps for Rs 17 out of 20 Rs.
  With the combination of (1 Rs, 2 Rs, 5 Rs) , purchased stamps of 17 Rs. can be
  (2,5,1)-> 8+3=11
  (4,4,1) -> 9+3=12
  (6,3,1) ->10+3= 13
  (8,2,1) ->11+3=14
  (10,1,1)->12+3=15
  
  We can see that from out of the above options only 12 is given as an answer
  therefore 12 is the answer
• 8 years agoHelpfull: Yes(0) No(0)