1975-1726=249 (Sir John Kerr born 24-9-1914 the year of the start of WWI - see the progressive significance of 9/11 in 5 Identical 249 Outcomes 47 Years Apart with DofE Protection and When the mocked FAKE becomes Redemption Truth the mockers are FAKE)
1975-1764=211 (see the USADP=m/d calculation of the birth date of HRH Prince Philip in 295 Significantly Established and 211 is the base total of the birth date of Prince William (the Energy "Bill" - see Gene Technology Act 21-6-2001)
1975-1866=109 (see CERN - First False Apocalypse Experiment LHC - 10-9-2008 and my blog post
1975-1947=  28 (three events in 1947 The Roswell Incident 7-7-1947, the 4th creation of the title Duke of Edinburgh 19-11-1947 and the wedding of Princess Elizabeth and Prince Philip 20-11-1947)

Round off to nearest whole number:  100 (see To The Left and Right of 147)
Round off to nearest whole number:  17 (see