Question

identify whether 51,50,49,.....21 forms an ap?

Answer 1

Yes because the common difference is -1

Answer 2

Hey MATE!

Yes the above series ( 51 , 50 , 49 ..... 21 ) form an AP because it has a common difference of -1.

d => 51 - 50 = -1
d => 50 -49 = -1

Hope it helps

Hakuna Matata :))