find the sum of 15 terms of AP 18,16,14.........
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Answer:
15th term is (-10)
Step-by-step explanation:
AP = 18,16,14
d= 16-18 = (-2)
n = 15 a=18
an = a+(n-1)d
a15 = 18+(15-1)(-2)
= 18+14(-2)
= 18-28
= -10
Answer:
Here is the answer =>
Step-by-step explanation:
A.P=18,6,14
a=18
d=-2
15th term=a+14d (a+(n-1)d) and n=15
So 15th term=18+14(-2)
=18+(-28)
=18-28
=-10
So the 15th term of the A.P 18,16,14...... is -10 which is the required answer.
HOPE IT HELPS.