A sequence can be generated by using an=a(n−1)+29, where a1=46 and n is a whole number greater than 1. What is the 6th term in the sequence, a6?
A. 180
B. 191
C. 200
D. 211
Answers
Given : A sequence can be generated by using aₙ=aₙ₋₁+29, where a₁=46 and n is a whole number greater than 1.
To Find : 6th term in the sequence, a₆?
A. 180
B. 191
C. 200
D. 211
Solution:
aₙ=aₙ₋₁+29
a₆ = a₅ + 29
a₅= a₄ + 29
=> a₆ = (a₄ + 29) + 29
=> a₆ = a₄ + 58
a₄= a₃ + 29
=> a₆ = (a₃ + 29) + 58
=> a₆ = a₃ + 87
a₃= a₂ + 29
=> a₆ = a₂ + 29+ 87
=> a₆ = a₂ + 116
a₂ = a₁ + 29 => a₂ = 46 + 29 = 75
=> a₆ = 75 + 116
=> a₆ = 191
6th term in the sequence a₆ = 191
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SOLUTION
TO CHOOSE THE CORRECT OPTION
A sequence can be generated by using
and n is a whole number greater than 1.
What is the 6th term in the sequence
A. 180
B. 191
C. 200
D. 211
EVALUATION
Here it is given that a sequence is generated by
Thus
So we get
Putting n = 6 , 5 , 4 , 3 , 2 we get
Adding above equations we get
FINAL ANSWER
Hence the correct option is B. 191
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