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StepMaths Mock Paper 1 · Q6

Paper 1Sequences & series

The ratio of the 11th and the 21st terms of an arithmetic progression is 9:89:8. What is the ratio of the 51st and 91st terms of the arithmetic progression?

A1:51:5
B5:15:1
C10:1110:11
D11:1011:10
E1:11:1

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