Elitmus Exam Numerical Ability Number System

If (a^4)+(1/a^4)=119 then find value of (a^3)-(1/a^3)=????

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plz post todays (14th sep) crypt question... somthing like

AGE
RAM
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Where s=1 this was the hint
if the number of 2 rs, 5 rs and 10 rs coins are 500 and total sum of money is 3130.when the 5 rs and 10 rs coins are exchanged .total sum is decreased by 300.what are the no of coin of 2 rs .

option a 200 b 210 c 140