English

Study the Sequence Pattern of Letters Or Numbers Carefully to Work Out the Pattern on Which It is Based and Answer Market the Next Item in the Sequence Must Be. -

Question

Study the sequence pattern of letters or numbers carefully to work out the pattern on which it is based and answer market the next item in the sequence must be. For example, the sequence 'A, C, E, G,'? has odd-numbered letters of alphabet; therefore, the next item must be ‘I’.

A1, C3, F6, J10, O15,?