If x belongs to R, the numbers 5 1+x + 5 1-x , a/2 , 25 x +25 -x forms an A.P then a must lie in the interval A) [1,5] B) [2,5] C) [5,12] D) [12,infinity]

Question

Sourabh Singh · Answer

Hii

Check in by applying the basic property of AP i.e.

2*(Middle Term) = SUm of first and Last term

you will get the relation in terms of “x”

do a bit of modification and the answer is ready

Thanks

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If x belongs to R, the numbers 5 1+x + 5 1-x , a/2 , 25 x +25 -x forms an A.P then a must lie in the interval A) [1,5] B) [2,5] C) [5,12] D) [12,infinity]

If x belongs to R, the numbers 5^1+x + 5^1-x , a/2 , 25^x+25^-x forms an A.P then a must lie in the interval

A)     [1,5]

B)      [2,5]

C)      [5,12]

D)     [12,infinity]

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If x belongs to R, the numbers 5 1+x + 5 1-x , a/2 , 25 x +25 -x forms an A.P then a must lie in the interval A) [1,5] B) [2,5] C) [5,12] D) [12,infinity]

If x belongs to R, the numbers 51+x + 51-x , a/2 , 25x+25-x forms an A.P then a must lie in the intervalA) [1,5]B) [2,5]C) [5,12]D) [12,infinity]

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If x belongs to R, the numbers 5^1+x + 5^1-x , a/2 , 25^x+25^-x forms an A.P then a must lie in the interval

A) [1,5]

B) [2,5]

C) [5,12]

D) [12,infinity]