x+y+z=15, if 9,x,y,z,a are in AP, while 1x+ 1y+ 1z= 53, if 9,x,y,z,a are in HP, then value of a will be

JEE Main Mathematics question

, if are in AP, while , if are in HP, then value of will be

Answer: (A)

In the AP, gives ; then has common difference and . In the HP, are three consecutive terms of the AP

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Question ID VK-021663