Question

Consider the AP -74, -68, -62...How many negative numbers are ther in this sequence? Find first postive number in this sequence.​

Answer 1

Answer:

a= -74,d=6

An= -74+(n-1)6<0

-74+6n-6<0

-80+6n<0

6n<80

n<80\6

n=13

Number of Negative integers =13

First positive integer = -74 + (14-1)×6=-74+78=4

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