Question

what is the number of term of an A. P. whose terms are 100,105......500?​

Answer 1

Answer:

A1=100 A2= 105

d= a2-a1= 105-100= 5

an=500

now,

an= a+(n-1)d

500= 100+(n-1)5

500= 100+5n-5

405= 5n

n= 405/5

n= 81

therefore total number of terms is 81 in the given A.P

Answer 2

Answer:

Number of terms = 81

Step-by-step explanation:

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