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Find thevalue of 'r': (i) .^(12)P_(r) = 1320 (ii) .^(56)P_(r+6): .^(54)P_(r+3) = 30800 :1 (iii) 5.^(4)P_(r) = 6.^(5)P_(r-1) (iv) .^(9)P_(5) +5 .^(9)P_(4) = 10 P_(r) |
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