the difference of 16th and 8th term of an ap is -16 and their sum is -50 find series ??? plz tell me fast and correct
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Given
a16 - a8 = -16
a16 + a8= -50
therefore ,
a + 15 d - ( a+7 d ) = -16 ......(i)
a + 15 d + a + 7d= -50.........(ii)
from equation (i)
d= -2
from equation (ii)
a+15d + a+ 7 d= -50
a = -3
hence you can now form serious......
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