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Mathematics for IGCSE & O level - Sequences (Section 3 - No. 28)

If the nth term of a sequence is given by 2n + 1, what is the third term?
3
5
7
9

ব্যাখ্যা

Substitute n=3 into the formula 2n+1, which gives 2(3) + 1 = 7.

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