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Geometric Progression - Harmonic Progression - 2
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Harmonic progression - 2

## Bharat Gupta is teaching live on Unacademy Plus

U
awesome course helped me alot waiting for your next vocab course sir
PD
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Bharat Sir, please complete this course at earliest.
Bhavya Jain
a year ago
We need more questions based on different summation of series.
Bhavya Jain
a year ago
Sir, reminder for sequence n series. This is a great course. Please complete as soon as you find time. Thanks :)
1. SEQUENCE AND SERIES Class -13 (Ttarmonic Proqression)

2. If a, b, c are in HP, then the value of }. + 1) { + 1-1 - 3 2 b2 alb 2 1 b. a2+ b2 + c2 c. d. both a and c If the sum of the reciprocals of the first seven terms of a harmonic progression is 70, find the 4th term of the HP If a, b, c are in . . b, c, d are in G.P and c, d, e are in HP, then which of the following is true. a. 2c a + e c. c (a + e) 2ae d. ab de If A.M. and G.M. of two numbers is 10 and 8 respectively, then find their H.M. a. 9.2 b. 12 c. 6.2 d. 6.4

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4. If A.M. and G.M. of two numbers is 10 and 8 respectively, then find their H.M. a. 9.2 b. 12 c. 6.2 d. 6.4

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6. If A.M. and G.M. of two numbers is 10 and 8 respectively, then find their H.M. a. 9.2 b. 12 c. 6.2 d. 6.4 2 . 2.

7. If the sum of the reciprocals of the first seven terms of a harmonic progression is 70, find the 4th term of the HP C.

8. If the sum of the reciprocals of the first seven terms of a harmonic progression is 70, find the 4th term of the HP an 2 lo

9. If a, b, c are in AP. b, c, d are in G.P and c, d, e are in . ., then which of the following is true. c. c (a e) 2ae d. ab de

10. If a, b, c are in AP. b, c, d are in G.P and c, d, e are in . ., then which of the following is true. a.2c = a + e b. ae = c2 C. C (a + e) = 2ae d, ab = de we Rove to pe, ,C,d,e in buch a o 0 LA . a ce _ 2

11. c-ae + a-b} If a, b, c are in . ., then the value of I& + 2 h2 alb b. a2 + b2 + c2 C.bc b2 d. both a and c

12. If a, b, c are in . ., then the value of G + 1-ae + 1-1 2 '2 ah b. a2 + b2 + c2 C.bc b2 d. both a and c = Cat 2-1 ) (3 -a) b ab beb