Fractions and Decimals
0.004 x 0.04 x 0.4 x 0.0004 = ?

0.00000256
0.0000000256
0.000000256
0.00000000256

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Fractions and Decimals
A has twice as much money as B. They play together and at the end of the first game B wins one-third of A's money from A, what fraction of the sum that B now has, must A win black in the second game,

1/20
1/5
1/10
1/15

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