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A coin is tossed 7 times.
Calculate the number of possible combinations that gives 4 heads and 3 tails.
Suggested Answer: A
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11 comments · newest first
AN
Annmarie
11 months ago
35 makes sense, good job!
MI
Mitsue
12 months ago
I thought it would be way higher than that!
CH
Chaya
12 months ago
Wait, are you sure it's not 42?
IS
Isadora
12 months ago
Totally agree, it's 35!
KY
Kyoko
1 year ago
The answer is 35 combinations!
LY
Lynelle
1 year ago
I’m pretty confident it’s 210 because I remember the formula involves factorials, but I should double-check my notes.
MA
Maurine
1 year ago
I feel like I might have confused the combinations with permutations in my studies. Is it really just 7 choose 4?
DA
Daron
1 year ago
I think we need to use the combination formula for this, but I'm not entirely sure how to set it up.
LA
Lashon
1 year ago
I remember practicing similar questions, and I think the answer is 35, but I can't recall the exact calculation.
EL
Elli
1 year ago
Hmm, I'm not totally sure about this one. I know continuous reinforcement is good for quickly establishing a behavior, but I think intermittent might be better for maintaining it over time. Let me think this through a bit more.
ZE
Zena
1 year ago
Lists and Data Extensions seems like the safest bet to me. That way I can cover both options and not risk missing something important.