Answer :
The probability that the person will be correct based on the information will be 0.00833.
How to solve probability
In this case, the total coins are 7 and the types of coins are 4. Therefore, the combination will be:
= 10! / 3!(10 - 3)!
= 10! / 3!7!
= (10 × 9 × 8) / (3 × 2)
= 120
Therefore, the probability will be:
= 1/120 = 0.00833
In conclusion, the correct option is 0.00833.
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