Question

Find the first term 'a ' and common difference 'd' :
(i) 2,4,8,16,…
(ii) -1.2,-3.2,-5.2,-7.2,…
(iii) 10,7,4,…,-62
(iv) 5,5,5,... "​

Answer 1

HOPE IT HELPS :

i ) 2 , 4 , 8 , 16 . . . .

The given series is a GP having

First term (a) = 1

Common Ratio (r) = 2

ii ) -1.2 , -3.2 , -5.2 ,  -7.2

The given series is an AP having

First term (a) = -1.2

Common Difference = -2

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