Only one, Indira Gandhi (but she was elected twice).
6 times
only once.
No, although many do. A Prime Minister is simply the person whose party have elected as leader irrespective of formal qualifications. When the party is elected to government, the leader is sworn in as Prime Minister.
This depends on the country. Please re-ask your question specifying the country, or see related questions. There have been many women elected as prime minister across the world.
Australia does not have a president. The government is run by a Prime Minister. The Prime Minister is elected for a maximum of three years per term, but there is no limit to how many consecutive terms they can be elected to office.
Canadian senators are appointed by the Prime Minister, they are not elected (although there are plans to reform the Senate).
as many no of times he is elected as the leader of majority party(or head of a coalition)
In Russia, the Prime Minister isn't elected and does not serve a specific term length. He or she is appointed by the President and can be let go any time the President chooses. If a new president is elected, then the Prime Minister must resign, and a new Prime Minister will be appointed by the new President.
Prime Ministers can normally be elected any number of times.
Stephen Harper became the Prime Minister once in 2006. He has continued to be re-elected in 2008, with an election pending in 2011. So far he has not had to resign as Prime Minister.
The Prime Minister can serve a maximum of 5 years before having to seek reelection That is call a general election. Unlike the USA there is no limit as to how many terms a Prime Minister can stand, providing they get reelected