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Mathematics, 06.11.2019 07:31 djj94

3. the first car of the train, right behind the engine, contains 10 boxes. in each of the following
cars there are twice as many boxes as in the car in front of it.
how many boxes are there in the fifth car?
(a) 100
(b) 120
(c) 140
(d) 160
(e) 180

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