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The intervals between the adjacent notes...

The intervals between the adjacent notes of a diatonic scale are as follow:
`{:(Sa,darr,Re,darr,Ga,darr,Ma,darr,Pa,darr,Dha,darr,Ni,darr,Sa),(,9//8,,10//9,,18//5,,9//8,,10//9,,9//8,,16//15,):}`
If the frequency of the key note is 256 Hz, find the frequency of 'Pa'.

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