Question

5. Find the number of terms in each of the
following A.P.:
(i) 7, 13, 19, ......, 205 (ii) 18,15
(ii) 18,151/2,13, ......, -47​

Answer 1

Answer:

34

Step-by-step explanation:

Given 7;13;19...........205

L=a+(n-1)d a=first term ; n=no.of terms

d=distance =13-7=7

205=7+(n-1)6

205=7+6n-6

205=1+6n

205-1=6n

204=6n

204/6=n

34

The 34 term is 205

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Answer 2

Step-by-step explanation:

i) 7,13,19,......205

a=7, d= 13-7=6, An= 205

An= a+(n-1)d

205=7+(n-1)6

$\frac{205 - 7}{6} = n - 1$

$\frac{198}{6} + 1 = n$

n= 33+1

n=34 answer

ii) second question wrong type kiya hai .....