If mn=81 then the value of (m-1) n+4 is:

Options
- 1000
- 6552
- 6565
- 6560

CORRECT ANSWER : 6560

Discussion Board
actual answer

m ^ n = 81 implies
m = 9 & n = 2 0r m = 81 & n = 1 or m = 81^2 & n = 1/2.. so on
where m =9 and n = 2 makes sense.
so substituting these values to (m-1)^(n+4) we get 8^6 = 262144


vinay L 02-5-2021 08:18 AM

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