Plz solve 24 one.

Plz solve 24 one. 22. If x be the AM and z is equal to- are in AP. then a2,b2 c2 will 1 b+c c + a'a+b be in- (4) None of these 24. If sum of A.M. and H.M between two positive numbers is 25 and their GM is 12, then sum Of numbers is- (3) 32 (2) 18 (4) 18 or 32 25. Find the sum of the series up to n term 1.3.5 + 3.5.7 + 5.7.9 (1) 8n3 + 12n2 — 2n — 3 (2) n(8n3 + 11n2 — (3) n(2n3 + 8n2 + 7n — 2) (4) none of these .26

18 or 32

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