Kevin Langdon Omni IQ test


A certain country manufactures coins in eight integral denominations from 1 piaster to 300 piasters. The ratios between adjacent denominations are all either 2, 2½ or 3. To purchase a 69-piaster souvenir, a tourist gives the seller one coin and receives one coin in exchange.

Which of the following is true?

 A. There are both 5-piaster and 30-piaster coins.

B. There is a 5-piaster coin but no 30-piaster coin.

C. There is a 30-piaster coin but no 5-piaster coin.

D. There is neither a 5-piaster coin nor a 30-piaster coin.

E. None of the alternatives above can be positively established from the information given.



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