How many numbers in the sequence 16, 18, 20, 22, 24..... should be taken to get an average 100
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There are 85 numbers total.
Average = sum of n number of objects divided by n
Sum of n numbers = n/2 (2a+(n-1)d)
⇒ 85/2(2*16+(84)2)
⇒ 85/2(32+168)
⇒ 85/2(200) =8500.
Average = 8500/85 =100.
So the answer is 85.
Average = sum of n number of objects divided by n
Sum of n numbers = n/2 (2a+(n-1)d)
⇒ 85/2(2*16+(84)2)
⇒ 85/2(32+168)
⇒ 85/2(200) =8500.
Average = 8500/85 =100.
So the answer is 85.
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