The perimeter of a sector is p. the area of the sector is maximum when its radius is
The area, in square unit, bounded by the curves y = x3, y = x2 and the ordinates x = 1, x = 2 is
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Let z,w be complex numbers such that z̅ + iw ̅ = 0 and arg zw = π.Then arg z equals
If (a+ib)(c+id)(e+if)(g+ih) = A+iB, then (a2+b2)(c2+d2)(c2+f2)(g2+h2) =
Two functions f : R → R , g : R → R are defined as follows :
What is the value of the integral ∫ ex [ f'x + f x ] dx ?
The statement "If x is divisible by 8, then it is divisible by 6" is false if x equals
The system of equation
2x + y = 5
x - 3y = -1
3x + 4y = k
is consistent, when k is
Five digit number divisible by 3 is formed using the digits 0, 1 , 2, 3, 4 and 5 without repetition. Total number of such numbers is
If A and B are two events such that P(A ∪ B) = 0 .65, P(A ∩ B) = 0.15 then
You are given a box with 20 cards in it. 10 of these cards have the letter 1 printed on them. The other ten have the letter T printed on them. If you pick up 3 cards at random and keep them in the same order, the probability of making the word IIT is
If to form a ΔABC it is given that a=5, b=7, sinA=( 3/4 ), then possible triangles are
If the A.M. and G.M, of the roots of a quadratic equation in x are p and q respectively, then its equation is
If v is the variance and σ is the standard deviation, then