Question

consider the arithmatic sequence - 172, - 165, - 158. how many negative numbers are in this sequence
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Answer 1

Answer:

we will do by hit and trial method

Step-by-step explanation:

first by hit and trial we will find out the number which is least negative in an AP

the no. obtained is -4=an

an=a+(n-1)d

-4=-172(n-1)7

168=(n-1)7

168/7=(n-1)

24+1=n

25=n