║⊕QUESTION⊕║
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CLASS 11
SEQUENCES AND SERIES
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If there are 76 terms in an A.P. of which the first term is 9 and the last is 384; find the 50th term of the A.P.
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Answer:
Step-by-step explanation:
Total terms = 76
a +(n-1)d
384 = 9 + 76d -76
384 = 76d - 67
384 +67 = 76d
451 = 76d
d = 451 / 76
t50 = a +(n-1) d
9 + 49*6
9 + 294
= 303
Answer = 303