MA-4

Number patterns and the nth term

Lower Sec Maths · Secondary 1 · Hard · Number patterns and the nth term

The first four terms of a sequence are:

T_1 = 3(1+4) = 15

T_2 = 3(2+4) = 18

T_3 = 3(3+4) = 21

T_4 = 3(4+4) = 24

.

(a) Find the 50th term of the sequence.
(b) Find an expression for the

n

th term,

T_n

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