## Bharat Gupta is teaching live on Unacademy Plus

SEQUENCE AND SERIES Class 5 (Arithmetic Mean)

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ARITHMETIC MEAN(AML) SINGLE ARITHMETIC MEAN Ovo h 24 ab

ARITHMETIC MEAN(AML) n ARITHMETIC MEAN The numbers A1, A2, , An are said to be the n arithmetic means between two given numbers a and b if M-RI

ARITHMETIC MEAN(AML) n ARITHMETIC MEAN The sum of n arithmetic means between two given numbers is n times the single A.M. between them i.e. if a and b are two given numbers and A1, A2, , An are n arithmetic means between them, then a, A, A, A-

n ARITHMETIC MEAN --. Anz njo An @ond) An-and 2(a td)-(a?2d) [b=admez..

If n . .s are inserted between 1 and 51 such that the 4th mean : 7th mean 3:5, then n is equal to (a) 24 (b) 22 (c) 20 (d) none of these.

If n A.M.s are inserted between 1 and 51 such that the 4th mean : 7th mean = 3 : 5, then n is equal to (a) 24 (b) 22 (c) 20 (d) none of these. SD ne th