when answer a question like this you take the smaller number from the bigger one the remainder will be the answer. (2011-1986)= 25
As of 2011, the leap years since 1986 have been: 1988 1992 1996 2000 2004 2008 This is a total of six leap years.
2014 - 1986 = 28 years.
2011 - 1986 = 25
There are 24 years between 1986 and 2010.
2011-1986=25
23
24
27
26
2079 - 2011 = 68 years.
There are 23 years between 1988 and 2011.
40 years is in between 1971 and 2011.