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
A. 6 B. 28 C. 24 D. 48 E. 12 - The area , in cm2 , of a circle has the same numerical value as the circumference, in cm, of
the same circle. The radius , in cm, is
A. 2 B. 1 C.2/π D.1/π E.1/2 - An arc PQ subtends an angle of 120° at the centre of a circle of radius 1 cm. The length of
arc PQ is
A. 120 cm B. 60 cm C. π/6cm D. 2π/3cm E.π^2/18 cm - If the central angle of a circle of radius 14 cm cuts off an arc of length 28 cm , then the radian
measure of the angle is
A. 2√2 B.2 C.1 D. 4 E. 8π