CBSE Class 11-science Answered
There are n arithmetic means between 3 and 17. The ratio of last mean to the first mean is 3:1. Find the value of n.
Asked by rushabhjain.avv | 19 Nov, 2018, 09:41: PM
Expert Answer
Let d be the common difference.
If the ratio between last arithmetic mean to first arithmetic mean is 3:1.then we have, 17-d = 3×(3+d) ........(1)
eqn.(1) gives d = 2.
If there are are n arithmetic means between 3 and 17, then (n+2)th term is given by, tn+2 = 3 + (n+1)×2 = 17 ...........(2)
By solving eqn.(2), we get n = 6
Answered by Thiyagarajan K | 19 Nov, 2018, 10:26: PM
Application Videos
-
Relation between roots and coefficient of a Quadratic E ...
Video contains the question based on quadratic equation where the relation ... -
Sum of infinite terms of an Arithmetic-Geometric Progre ...
Video contains the question based on how to find the sum of infinite terms ... -
Introduction to Locus of a point and its equation ...
Video contains the question based on finding equation of locus of a point -
Problems based on Equation of Locus of a Point ...
Video contains the question based on finding equation of locus of a poin...
-
Introduction to Translation of Axes and Problems based ...
Video contains the question based on translation of axes
Concept Videos
-
Trigonometric identities and problems
Fundamental trigonometric identities and problems based on them. Sign Conve... -
Degree measure and Radian measure ...
This video explains the concept of negative & positive angles, conversion o... -
Types of sets and its representation
Types of sets and describe two forms of set representation. -
Subsets and Supersets
This video covers the definition of subsets and supersets of a set and also... -
Representing the union and intersection of sets
Venn diagrams. Represent the union and intersection of sets with the help o...
CBSE 11-science - Maths
Asked by sampabarman328 | 18 Apr, 2024, 01:20: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by tahikpreet0001 | 17 Apr, 2024, 06:41: AM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by nitinkrjsr07082008 | 15 Apr, 2024, 11:32: PM
ANSWERED BY EXPERT
CBSE 11-science - Maths
Asked by kanhaparashar17 | 04 Apr, 2024, 12:55: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by dseno1741 | 29 Mar, 2024, 08:47: PM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by parvanipatil09 | 29 Mar, 2024, 10:12: AM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by rishithatelaprolu84 | 29 Mar, 2024, 08:32: AM
ANSWERED BY EXPERTCBSE 11-science - Maths
Asked by Manjeet | 23 Mar, 2024, 09:41: PM
ANSWERED BY EXPERT
