A cube with edge length 2 metres is cut up into cubes each with edge lengths 5 centimetres. If all these cubes were stacked one on top of the other to form a tower, the height of the tower would be.

a. 32km

b. 160m

c. 1600m

d. 3.2km

e. 320m

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A number of less than 2008. It is odd, it leaves a remainder of 2 when divided by 3 and a remainder of 4 when divided by 5. What is the sum of digits of the largest such number?

a. 26

b. 25

c. 24

d. 23

e. 22