1.
a) 4/25
b) 25/4
c) 2/5
d) 10/4
2. 10240.1=
a) 2
b) 4
c) 102.4
d) 1
3. √50000000=
a) 500√2
b) 50√2
c) 25000000
d) 5000√2
4. √24-5√6+√486=
a) 2√6
b) 3√6
c) 6√6
d) -2√6
5.
a) 24√211
b) √(1/4)
c) 12√25
d) None of them
6. √24· 3√36=
a) 12·6√6
c) 12
7. Rationalise:
a) 5√8
b) (5√8)/3
c) (5√8)/2
8. Rationalise:
a) √2+3√6
b) √2-3√6
c) √2+√6
d) 10√2+8√3
9. log20.125=
a) 0.25
b) -1
c) -3
d) It doesn't exist
10. If log2 ≈0.3, then log25=
a) 0.075
b) 1.7
c) 1.4
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