In an aquarium we have 3 red fishes 2 black and one silver. we choose simultaneously 3 fishes. how many possibilities are there?

I got 20 but could only count 6 possibilities

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What is cross multiplication

Of the following numbers, which one is prime, 32,42,29,15!

What is the difference of the means of the distributions? 15 30 45 60

Find all solutions to the equation. sin x = square root of three divided by two.

The line y-3 = ½ (x + 4) expressed in standard form has what equation?

What is the remainder when 23,870 : 38

What is the least common multiple of 6 and 10

Each package of kiwis contains 8 kiwis. How is the number of kiwis related to the number of packages?

What is the equivalent decimal of 1 3/4