156
84
42
4. A carpenter earns * 1650 in 3 hours. How much will he earn in 9 hours?
5. An aeroplane flies 3200 km in 4 hours. How far does it travel in 7 hours?
Answers
Answered by
1
Answer:
If
(2^(n³-3n²)/2)×2^3n+ [ 4.2^n²+2n]
= 640, then find the value of n.
(D) 10
(C) 8
(B) 7
(A) 6
(E) None of these
Answered by
1
Step-by-step explanation:
156
84
42
4. A carpenter earns * 1650 in 3 hours. How much will he earn in 9 hours?
5. An aeroplane flies 3200 km in 4 hours. How far does it travel in 7 hours?
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