- The value of {[(2)^(-1) ]^(-1) }^(-1)is
A.2 B.-2 C.-1/2 D.1/4 E.1/2
7.5^(3^2 )/(5^3 )^2 =…….
A.1 B.0 C.25 D.125 E.625
8.(-1)^(-1) +(-1)^0 =……….
A. 2 B.1 C.0 D. -1 E.-2
- Which of the following is (are) false?
1.(a+b)^2 =a^2 +b^2 2.√(a+b) =√a +√b 3.(ab)2 =a2b2
A.1 only B. 2only C. 3 only D. 1 and 2 only E. None of these
10.((a^2+b^2 )^2 (a+b))/(a-b)^2 =………….
A.(a+b)3 B.(a-b)3 C.(a-b)(a+b) D.(a-b)2 (a+b) E.(a-b)(a+b)3
11.If 152x+1=1 ,then x=……….
3 B. 4 C. 5
D. 6 E. 7
- In the figure, x=………
A. 10 B.11 C. 12
D. 18 E. None of these
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