140
15.
5.45
7
7585
The product is 1285
2 x 5 = 10.
It is: (2+10) times 5 = 60
9 times5 of them were in Texas
2•2•5•3•7•11=4,620 
It gose in 5 times5 times
2 x 3 x 5 is the prime factorization of 30.
an experiment succeeds twice as many times as it fails. find the chance that in 6 trails, there will be atlest 5 success