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An insurance sales representative selects 4 policies to review. The group of policies she can select from contains 10 life policies, 5 automobile policies, and 3 homeowners policies. Find the probability of selecting all life policies.

The number of ways to select all life insurance policies is 10C4. Hence,
P)all life policies = 10C4 = 210 = 7
18C4 =3060 102
Can someone tell me how did you get the 210 and the 3060. I need it broke down step by step then I can follow it.

Thanks for your help. This is for my final.

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