Real numbers

Without actual division find out which of the following rational numbers has a terminating decimal expansion

P)$$\frac { 17 }{ 90 }$$

Q)$$\frac { 33 }{ 50 }$$

R)$$\frac { 121 }{ { 2 }^{ 2 }\times { 5 }^{ 3 } }$$

S)$$\frac { 121 }{ { 2 }^{ 3 }\times { 3 }^{ 2 }\times { 7 }^{ 5 } }$$

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