MathDB

20

Part of 1980 AMC 12/AHSME

Problems(1)

Easy Probability

Source:

12/31/2005
A box contains 2 pennies, 4 nickels, and 6 dimes. Six coins are drawn without replacement, with each coin having an equal probability of being chosen. What is the probability that the value of coins drawn is at least 50 cents? (A) 37924(B) 91924(C) 127924(D) 132924(E) none of these\text{(A)} \ \frac{37}{924} \qquad \text{(B)} \ \frac{91}{924} \qquad \text{(C)} \ \frac{127}{924} \qquad \text{(D)} \ \frac{132}{924} \qquad \text{(E)} \ \text{none of these}
probabilitybinomial coefficients