The value of 21/2.31/3.41/410−1/5.53/5÷34/3.5−7/54−3/5.6 is
6
10
15
30
The given expression
21/2.31/3.(2)21/4(2×5)−1/5.53/5×(22)−3/5×2×334/3×5−7/5=2(12+12).31/32−1/5×5(35−15)×2−6/5×2×334/3×5−7/5=2(1+1/5−6/5+1)×3(13+1−43)×5(75−25)=21×30×51=10.
Find the value of:
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