Question

Find the number of terms in the A.P. : 18, 15 1/2, 13, ..., - 49 1/2.​

Answer 1

Answer:

the number of the terms are8,5

Answer 2

Answer:

HERE...a1=18.....d=15and1/2-18....so...d=2and1/2...

so..after 13....next term is 13-2.5=10.5....

similarly the pattern goes on ,,,and the further terms are...

after 10.5,it is 8,5.5,3,0.5,-3,-5.5,-8,-10.5,-13,-15.5,-18,-20.5,-23,-25.5,-28,-30.5,-33,-35.5,-38,-40.5,-43,-45.5,-48,-50.5    .....etc...etc,....etc...

HOPE IT HELPS..

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