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Find the 15th term of the sequence 20, 15, 10....
- a)-45
- b)-55
- c)-50
- d)0
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Find the 15th term of the sequence 20, 15, 10....a)-45b)-55c)-50d)0Cor...
15th term = a + 14d
⇒ 20 + 14*(-5)
⇒ 20 - 70 = -50.
⇒ 20 + 14*(-5)
⇒ 20 - 70 = -50.
Most Upvoted Answer
Find the 15th term of the sequence 20, 15, 10....a)-45b)-55c)-50d)0Cor...
Since above sequence is in A.P with common difference of -5 and first term 20.
Then applying formula of AP we get 15 term as
20 + (n-1) d.
15 term is 20 + (15-1) -5 i.e. -50
Then applying formula of AP we get 15 term as
20 + (n-1) d.
15 term is 20 + (15-1) -5 i.e. -50
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Community Answer
Find the 15th term of the sequence 20, 15, 10....a)-45b)-55c)-50d)0Cor...
Given sequence: 20, 15, 10....
To find the 15th term of the sequence, we need to determine the pattern or rule followed by the sequence.
Pattern:
Upon observing the given sequence, we can see that each term decreases by 5 compared to the previous term.
Finding the 15th term:
To find the 15th term, we can use the formula for the nth term of an arithmetic sequence:
nth term = a + (n - 1)d
where:
a = first term
n = term number
d = common difference
In this case, the first term (a) is 20 and the common difference (d) is -5 (since the terms are decreasing by 5).
Using the formula, we can substitute the values:
15th term = 20 + (15 - 1)(-5)
Simplifying the expression:
15th term = 20 + 14(-5)
15th term = 20 - 70
15th term = -50
Therefore, the 15th term of the sequence is -50, which corresponds to option C.
To find the 15th term of the sequence, we need to determine the pattern or rule followed by the sequence.
Pattern:
Upon observing the given sequence, we can see that each term decreases by 5 compared to the previous term.
Finding the 15th term:
To find the 15th term, we can use the formula for the nth term of an arithmetic sequence:
nth term = a + (n - 1)d
where:
a = first term
n = term number
d = common difference
In this case, the first term (a) is 20 and the common difference (d) is -5 (since the terms are decreasing by 5).
Using the formula, we can substitute the values:
15th term = 20 + (15 - 1)(-5)
Simplifying the expression:
15th term = 20 + 14(-5)
15th term = 20 - 70
15th term = -50
Therefore, the 15th term of the sequence is -50, which corresponds to option C.
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Find the 15th term of the sequence 20, 15, 10....a)-45b)-55c)-50d)0Correct answer is option 'C'. Can you explain this answer?
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Find the 15th term of the sequence 20, 15, 10....a)-45b)-55c)-50d)0Correct answer is option 'C'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about Find the 15th term of the sequence 20, 15, 10....a)-45b)-55c)-50d)0Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Find the 15th term of the sequence 20, 15, 10....a)-45b)-55c)-50d)0Correct answer is option 'C'. Can you explain this answer?.
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