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

If a (A) x=0 (B) x=1 (C) x=2 (D) None of these.

8899-6644-3322=?-112255(b)65 (c) 75 (d) 85 None of these

345+25xx0.80-111=?(a)254(b)324 (c) 666 (d) 600 (e) 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

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

If (a-b)=4 and ab=2, then (a^(2)+b^(2))=?( a) 18(b)20(c)25 (d) None of these

A,backslash B,backslash C and D are four consecutive even numbers respectively and their average is 65 . What is the product of A and D?( a) 3968 (b) 4092 (c) 4216 (d) 4352 (e) None of these

The distance between the points (acos25^@,\ 0) and (0,\ acos65^@) is (a) a (b) 2a (c) 3a (d) None of these

If a ,\ b ,\ c are in proportion, then (a) a^2=b c (b) b^2=a c (c) c^2=a b (d) None of these

If a+b+c=9 and a b+b c+c a=23 , then a^2+b^2+c^2=? (a)35 (b) 58 (c) 127 (d) none of these