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Chapter 5 Arithmetic Progressions Ex 5.4

Question 1.
Which term of the AP: 121, 117. 113, ….., is its first negative term?
Solution:
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 1

Question 2.
The sum of the third term and the seventh term of an AP is 6 and their product is 8. Fibd the sum of first sixteen terms of the AP?
Solution:
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 2
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 3

Question 3.
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 4
Solution:
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 4
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 6

Question 4.
The houses of a row are numbered consecutively from 1 to 49. Show that there is value of x such that the sum of the numbers of the houses preceding the house numbered x is equal to the sum of the numbers of the houses following it. Find this value of x.
Solution:
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 7
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 7a

Question 5.
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 8
Solution:
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 9
NCERT Solutions for Class 10 Maths Chapter 5 Arithmetic Progressions Ex 5.4 10

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