18. If 2n-7 X5n-4 =1250, find the value of n.
Hint: 21-4x2-3 x 51-4 = 1250 >
2n-4x59-4
= 1250 =
23
(2x 5)^-4 = (10)
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Answer:
18. If 2n-7 X5n-4 =1250, find the value of n.
Hint: 21-4x2-3 x 51-4 = 1250 >
2n-4x59-4
= 1250 = 123456
23
(2x 5)^-4 = (10)
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