Question

Which terms of AP 2,7,12....222?

Answer 1

Answer:

45th term.

Step-by-step explanation:

As we can see in this AP the common difference is 5.

So, a (first term) = 2 , d(common diff.)=5

and the formula for nth term in AP is,

Tn = a+ (n-1)d

here Tn = 222 and n= ?

Now,

222 = 2 + (n-1)5

=> 222 - 2 = (n-1)5

=> 220 = (n-1) × 5

=> 220/5 = n - 1

=> 44 = n - 1

=> n = 45.

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Answer 2

Answer:

45th term is equal to 222

Step-by-step explanation:

a=2

d=7-2=5

an=222

n=45

by the formula