`[(sqrt(81))^2]^2=(?)^2` (a) 8 (b) 9 (c) 4096 (d) 6561 (e) None of these

1888-:32-:8=?( a) 7.375 (b) 9.485 (c) 29.5 (d) 472 (e) None of these

(80)^2-(65)^2+81=? 306 (b) 2094 (c) 2175 (d) 2256 None of these

(15)^(2)+(18)^(2)-20=sqrt(?)( a) 22(b)23(c)529(d)279841 (e) None of these

If 3a=4b=6c and a+b+c=27sqrt(29) then sqrt(a^(2)+b^(2)+c^(2)) is (a) 3sqrt(29) (b) 81 (c) 87 (d) None of these

400-:0.1xx0.2=?(a)0.8(b)8(c)80(d)8000(e) None of these

The sum of values of x satisfying the equation (31+8sqrt(15))^(x^2-3)+1=(32+8sqrt(15))^(x^2-3) is (a) 3 (b) 0 (c) 2 (d) none of these

The sum of values of x satisfying the equation (31+8sqrt(15))^(x^2-3)+1=(32+8sqrt(15))^(x^2-3) is (a) 3 (b) 0 (c) 2 (d) none of these

if (6x^2-5x-3)/(x^2-2x+6)<=4 , then the least and the highest values of 4x^2 are : (a) 0 and 81 (b) 9 and 81 (c) 36 and 81 (d) None of these

sqrt((.0196)/(?))=0.2( a) 0.49( b) 0.7(c)4.9(d) None of these

The value of ("lim")_(xvec2)(sqrt(1+sqrt(2+x))-sqrt(3))/(x-2)i s (a) 1/(8sqrt(3)) (b) 1/(4sqrt(3)) (c) 0 (d) none of these