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Reenu Bala

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M.sc.(maths) ,B.Ed. with maths and science,...passionate about teaching.. IIT JAM qualified, C.T.E.T. , H.T.E.T. Qualified.

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Nabeel Khan

a year ago

how did you get a intersection b in the nationality question
if possible tell me my mistake too
we can consider the group of Dutch and britishers to sit together that we consider them to be a single quantity and number of ways to arrange them with the others is 2! and now the people inside of this quantity can be arranged in 2! number of ways hence 4

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