Just winning the top 11 states is by itself all that is needed to win. If the candidate wins some other states, then he can lose whatever combination of top states that total to the same number of votes as the smaller states that he wins.
I do not understand what you mean by "4 different combinations". Winning any one of the top states is enough if he can win all of others plus DC.
Three
2
30 years is the minimum age prescribed for a candidate to become a member of the Rajya Sabha.
35.
He/She has to achieve minimum 3% of votes to avoid forfeiting his deposit.
The minimum age is 35. :D
25 Yrs.
270 electoral votes are needed to win the presidency.
60% in both 10&12.
There is no national standard. It varies from state to state.
Minimum of one intake valve and one exhaust valve per cylinder. Beyond that many different combinations have been engineered. Please see the link.
Usually at the minimum or maximum of a function, one of the following conditions arises:The derivative is zero.The derivative is undefined.The point is at the end-points of the domain that is being considered (or of the naturally-defined domain, for example, zero for the square root).This will give you "candidate points"; to find out whether each of these candidate points actually is a maximum or a minimum, additional analysis is required. For example, if the second derivative is positive, you have a minimum, if the second derivative is negative, you have a maximum - but if it is zero, it may be a maximum, a minimum, or neither.