Question no 1747 SSC CGL Tier 1 Quantitative Aptitude Questions and Answers Free Online Mock Test 43

SSC CGL Tier 1 :: QA Test 43

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1 .

If x+($1\over x$)=2 then the value of $x^7$+ ($1\over x^7$) is
A.$2^5$
B. 2
C. $2^12$
D.$2^7$

Answer : Option B

Explanation :

x+$1\over x$=2 So, x = 1 $x^7$+ $1\over x^5$=1+$1\over1$=2

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