"90 S and P" typically refers to the 90-day Standard and Poor's (S&P) 500 index. This index provides insight into the performance of large-cap U.S. stocks by tracking the 500 largest companies listed on stock exchanges in the United States. Tracking the 90-day performance can give investors a short-term view of market trends.
The S&P 500 index did not exist in 1929; it was introduced later in 1957. However, its predecessor, the S&P 90, was established in 1923 and included 90 stocks. In 1929, the stock market experienced significant volatility, culminating in the stock market crash in October, which was a precursor to the Great Depression. The S&P 90 was significantly affected by this crash, reflecting the economic turmoil of the time.
90 = Top of the Shop
In a letter, "P. S." means "Post Script."
17 S in a H P
Late 90's usually means 1997-1999.
90 = Top of the Shop
P=mv mass=0.156 kg (5 oz troy) velocity= 144.84 m/s (90 mph) m*v=0.156kg * 144.84 m/s P=22.6kg m/s
S-P interval means the integer minus the integer. The difference times nine.
7 Sides on a Twenty Pence Coin
Post-script.
Let P be the required percentage. Then :- P/100 = 90/300 P = 100 x 90/300 = 30% 90 is 30% of 300.
P is a permutation. It is asking for the numbers in the ()'s after it. For exapmle, P(6,4) is 6x5x4 which is 120.