Question

Find whether - 150 is term of the AP 17, 12 ,7 ,2......?

Answer 1

Answer:

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Step-by-step explanation:

-150 is not the term of the ap 17,12,7,2... Bcoz ap does not comes in decimal form.

Answer 2

Answer:

we use the formula an=(n-1)d but the answer is no because a term cannot be minus sign

Step-by-step explanation:

a=17

d=12-17=-5

an=-150

then,

an=a+(n-1)d

-150=17+(n-1)-5

-150-17=n-1×(-5)

167/5=n-1

167+1/5 =n

n=172/5

since n=172/5 (rational number)

therefore -150is not a term