1.

If \[{{a}_{1}},\ {{a}_{2}},\,{{a}_{3}},......{{a}_{24}}\] are in arithmetic progression and \[{{a}_{1}}+{{a}_{5}}+{{a}_{10}}+{{a}_{15}}+{{a}_{20}}+{{a}_{24}}=225\], then \[{{a}_{1}}+{{a}_{2}}+{{a}_{3}}+........+{{a}_{23}}+{{a}_{24}}=\] [MP PET 1999; AMU 1997]

A. 909
B. 75
C. 750
D. 900
Answer» E.


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