3. For an A.P., the first two terms are 100. 105. What is t16?
(A) 165 (B) 170 (C) 175 (D) 180
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Answer:
C) 175
Step-by-step explanation:
a=100
d=t2 - t1
= 105 - 100
d=5
tn = a + (n - 1)d
t16 = 100 + (16 - 1 )5
= 100 +(15)5
=100 + 75
t16 = 175
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