CBSE Class 10-Mathematics: Chapter –5 Arithmetic Progressions Part 5

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Question 22:

If there are terms in an AP, prove that the ratio of the sum of odd terms and the sum of even terms is

Answer:

Let a, d be the I term & Cd of the AP.

Question 23:

Find the sum of all-natural numbers amongst first one thousand numbers which are neither divisible or by

Answer:

Sum of all-natural numbers in first integers which are not divisible by i.e. sum of odd integers.

No’s which are divisible by 5

Required sum

1 Mark Questions

Question 1:

The next term of the AP in …... is

(a) 97

(b) 92

(c) 99

(d) 95

Answer:

(a) 97

Question 2:

The 10^th term of the AP in , ………… is

(a) 45

(b) 47

(c) 48

(d) 50

Answer:

(b) 47

Question 3:

If the sum of the circumferences of two circles with radii is equal to the circumference of a circle of Radius , then

(a)

(b)

(c)

(d) None of these

Answer:

(a)

Question 4:

If the perimeter of a circle is equal to that of a square, then the ratio of their area is

(a)

(b)

(c)

(d)

Answer:

(c)