Which event has a higher probability? Which event has a higher probability? 

$24$ rolls of 2 dice at once we get at least 2 $1$s

or

one roll of 4 dice at once we get at least one $1$?


Hint. $1$ minus the probability that in 24 rolls of 2 dice we never get 2 ones (at once): $1-\left(\frac{6^2-1}{6^2}\right)^{24}$.
1 minus the probability that in 1 roll of 4 dice we never get one: $1-\left(\frac{6-1}{6}\right)^{4}$.
Which number is greater? 
P.S. Both numbers are quite close to $0.5$.
