The mean of a single number is the number itself. So the answer is 969.
969 = Age of Methuselah
it was the year of the tenth centry
By yards I assume you mean cubic yards. Next: How deep: I assume 3 inches. (969 x 122 /3 ) / 123 = 969 / 36 = 323/12 = 26.9166666 cubic yards
121.125
190,893 divides by 969 and equals 197.
0.0495
969 years old when he died
193.8
2 can go into 48, but not into 969.
A expression in maths is a collection of terms without an equality sign.
Its maths
"tenth"