In an A,P 6,3,0,-3 - - - - - - , -36 find the number of terms
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Step-by-step explanation:
hope u understand
just use the nth term formula
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a = 6
an = -36 (an is the last term)
d = 3-6= -3
an = a+(n-1)d
so, n = an-a/d +1
n = -36 - 6/-3 +1
n= -42/-3 +1
n = 14 + 1
n = 15
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