Which term of the following ap is 360? 2,11 20,29
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Answer:
a = 2
d = 11 - 2 = 9
an = 360
an = a + ( n - 1 ) d
360 = 2 + ( n - 1 ) 9
360 - 2 = 9n -9
358 + 9 = 9n
367 ÷ 9 = n
4. 999 = n
so 360 is nota term of ap
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