You need to give the denomination and date of the coin. Also where you see the 77 at on the coin.
A Morgan silver dollar, which was minted in the United States from 1878 to 1904, and again in 1921, is composed of 90% silver and 10% copper. Each coin weighs approximately 26.73 grams, and the amount of silver in each coin is about 24.057 grams. The copper content in the coin is used to give it strength and durability, as pure silver is relatively soft and would be prone to damage from regular handling.
If by "go into" you mean divide, yes. 77 divided by 7 equals 11
LXXVII = 77
Presumably you mean 77%? You got 61 right.
78.4
Silver soldered was a fancy name for silverplate. 77 is likley a pattern or design number...
A Morgan silver dollar, which was minted in the United States from 1878 to 1904, and again in 1921, is composed of 90% silver and 10% copper. Each coin weighs approximately 26.73 grams, and the amount of silver in each coin is about 24.057 grams. The copper content in the coin is used to give it strength and durability, as pure silver is relatively soft and would be prone to damage from regular handling.
I assume you mean Canadian Centennial. If so, you would have to take the coin to a dealer or appraiser. Several different varieties of this coin were struck with values ranging from a few times face, up to over $700 . The only way to be sure is to have it examined in person.
There is around .77 ounces in a 1921 US silver dollar.
Mean = average; so (77+10)/2 = 43.5 = mean of 77 plus 10.
77 trillion dollars
-77 just as 77 is further from 0 on the positive side
In all music 'Op' or Opus mean 'work' so Op 77 would mean work number 77.
As opposed to fake silver? It depends ... If your coin has no mint mark or a D next to the bow in Washington's wig, it's a standard Bicentennial quarter made from copper-nickel. If it has an S mint mark, it should be a proof coin in its original holder. These were made from 40% silver. Please see the Related Question for more.
The country which on the silver medal in men's 77 kg weightlifting at the Rio 2016 Olympics was China.
In all music 'Op' or Opus mean 'work' so Op 77 would mean work number 77.
I think you mean 77/100. That would be .77 in decimals.