## Bharat Gupta is teaching live on Unacademy Plus

SEQUENCE AND SERIES Class -13 (Ttarmonic Proqression)

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

Live classes Recorded Classes Discussion Forum CAT PLUS COURSE V Facebook Group unacademy Practice Sheets Bharat Gupta Doubt clearing Visit : https://unacademy.com/plus

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

Batch - I Basic to Advance Level CAT Quantitative Aptitude Preparation Weekend Batch Live classes V Recorded Classes Discussion Forum Friday, Saturday and Sunday Registration close date 31st Aug Batch - Il V Facebook Group Practice Sheets Top 200 Proven Tricks to crack Quant for CAT 2018/19 Doubt clearing Friday, Saturday, Sunday and Monday Registration close date: 31st Aug Register Now

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.

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.

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

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

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

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

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