Question

.Which term of the Arithmetic progression -7, - 12, -17, -22, ... will be -82?
Is -100 any term of the given A.P? Give reason for your answer

Answer 1

Answer:

i can't understand

sorry

Step-by-step explanation:

Answer 2

Step-by-step explanation:

here,

first term,a = -7

common difference,d = -5

Tn = -82

Tn = a + (n - 1)d

-82 = -7 + (n - 1) × -5

-82 = -7 - 5n + 5

-82 + 2 = -5n

-80 = -5n

n = 16

So, 16 th term of the A.P is -82

Tn = -100

Tn = a+(n-1) d

-100 = -7 + (n-1) × -5

-100 = -7 - 5n + 5

-98 = -5n

n = 98/5

As no of terms can never be in fraction

Hence it is not possible

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