Question

1. The 21" term of AP whose first two terms are 3 and -3 is
(a)-117
(b) 113
(0) 143
(d) -143​

Answer 1

Answer:

GIVEN

A1 = 3

A2 = -3

d = -3-3 = -6

n= 21

An = a+(n-1)d

= 3+(21-1)(-6)

= 3 + 20(-6)

= 3-120

=-117

Step-by-step explanation:

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