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Question

If x=11+20, y=15+17 and z=14+18, then which of the following holds true?


A

x < y < z

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B

y < z < x

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C

y < x < z

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D

x < z < y

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Solution

The correct option is D

x < z < y


If you square all the values and compare them and place them in ascending order the order of magnitudes of their squares will also be the same,
x2=11+20+2220=31+2220y2=15+17+2255=32+2255z2=14+18+2252=32+2252
From observation x < z < y.


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