Finding The Value of N When Nth Term and AP is Given
Finding The Value of N When Nth Term and AP is Given
Finding The Value of N when Nth Term and AP is Given: To find the value of N we will first find the common difference and will then use the formula for the general term.
Example : Which term of the AP : 21, 18, 15,.....is- 81? Also, is any term 0? Give reason for your answer.
Solution : Here, a= 21 and and we have to find n.
as
So the common difference = -3
As
we have
So,
Therefore, the 35th term of the given AP is -81
Next, we want to know if there is any n for which . If such an n is there, then
i.e.,
i.e.,
So, the eighth term is 0.
For an AP the first term is -11 common difference is 4 and | |||
| Right Option : A | |||
| View Explanation | |||
The number of terms in the series 11, 15, 19, __________ , 211 is | |||
| Right Option : C | |||
| View Explanation | |||
What is the value of 9th term of an AP Series whose 6th term and 12th terms are 32 and 56, respectively? | |||
| Right Option : B | |||
| View Explanation | |||
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My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thThird consective year,my ward is in Abhyas with nice experience of admin and transport support.Educational standard of the institute recumbent at satisfactory level. One thing would live to bring in notice that last year study books was distributed after half of the session was over,though study ...
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7thAbhyas institute is one of the best coaching institute in the vicinity of Ambala cantt.The institute provides good and quality education to the students.The teachers are well experienced and are very helpful in solving the problems. The major advantages of the institute is extra classes for weak...
Shreya Shrivastava
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