SOLUTION: the post office has stamps of re 1 , rs 3 and rs 7 .which of the following cannot be achieved by buying exactly 100 stamps a)rs 298 b)rs 600 c)rs 473 d)rs 440

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Question 1083641: the post office has stamps of re 1 , rs 3 and rs 7 .which of the following cannot be achieved by buying exactly 100 stamps
a)rs 298
b)rs 600
c)rs 473
d)rs 440
Answer by ikleyn(52781) About Me  (Show Source):
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the post office has stamps of re 1 , rs 3 and rs 7 .which of the following cannot be achieved by buying exactly 100 stamps 

a)rs 298 

b)rs 600

c)rs 473   <<<---===  This definitely can not be achieved because buying exactly 100 stamps you must pay an EVEN number of rupees.   

d)rs 440