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Find the correct mirror image for the following problem figure from the alternatives:
What comes next in the series?
\(2, 6, 12, 20, 30, \ ?\)
In a sequence of numbers, each term is generated by multiplying the previous term by 2 and then subtracting 1. If the first term is 3, what is the fourth term in the sequence?
The following data shows the number of students in different streams in a school: 
Which type of graph is best suited to represent this data?