Paper 6 May/June 2011 MATHEMATICS (9709/62) A Levels
لطفا برای اطمینان از عملکرد و تجربه بهتر از مرورگرهای مدرن و به روز مانند کروم یا فایرفاکس استفاده کنید.

a) Find the number of different ways in which the 12 letters of the word STRAWBERRIES can be arranged
(i) if there are no restrictions,
(ii) if the 4 vowels $A$, $E$, $E$, $I$ must all be together.
b)(i) 4 astronauts are chosen from a certain number of candidates. If order of choosing is not taken into account, the number of ways the astronauts can be chosen is 3876. How many ways are there if order of choosing is taken into account?
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