how many term of an ap -6,-11/2,5needed togive the sum-25
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Step-by-step explanation:
The given numbers are not in A.P. because common difference is different.
d = a2 - a1
= -11/2 + 6
= 1/2
while
d = a3 - a2
= 5 + 11/2
= 21/2
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