Mathematics for IGCSE & O level - Sequences (Section 1 - No. 15) | ExamPlay

Mathematics for IGCSE & O level - Sequences (Section 1 - No. 15)

What is the first term of the sequence given by the formula 2n + 5?

5

7

8

9

설명

Substitute n=1 into the formula, and then solve. 2(1) + 5 = 7

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