How many terms of the A.P. 54, 51, 48, ..... should be taken so that their last term is 513
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Answered by
0
Explanation:
152.
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Answered by
1
Answer:
a = 54 , D = - 3
tn = a + (n -1 )d
513= 54 + (n-1)-3
513 = 54 -3n + 3
513= 57 - 3n
513 - 57 = - 3n
456 = - 3n
456 ÷ -3 = n
therefore n = - 152
therefore there should be 152 terms.
Explanation:
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