Solve 121/7!3!21

$$\frac { 121 } { 7 ! 3 ! 21 }$$

Evaluate

$$\frac{121}{635040}\approx 0.000190539$$

Solution Steps

The factorial of 7 is 5040.

$$\frac{121}{5040\times 3!\times 21}$$

The factorial of 3 is 6.

$$\frac{121}{5040\times 6\times 21}$$

Multiply 5040 and 6 to get 30240.

$$\frac{121}{30240\times 21}$$

Multiply 30240 and 21 to get 635040.

$$\frac{121}{635040}$$

Factor

$$\frac{11 ^ {2}}{2 ^ {5} \cdot 3 ^ {4} \cdot 5 \cdot 7 ^ {2}} = 0.00019053917863441673$$