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If one root of the equation ax2+bx+c=0 is the square of the other, then a(c-b)3=cX, where X is (a) a3+b3 (b) (a-b)3 (c) a3-b3 (d) N.O.T Please show the method .. ...
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1 + 1+2/1! + 1+2+3/2! + 1+2+3+4/3! + ..... ∞ = (a) 0 (b) 1 (c) 7e/2 (d) 2e Brahmastra - Exponential and logarithmic series Q No.5 ...
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If the roots of the equation x2-bx/ax-c = m-1/m+1 are equal but opposite in sign, then the value of of m will be (a) a-b/a+b (b) b-a/a+b (c) a+b/a-b (d) a+b/b-a Brahmastra, Quadratic Equations Q No. 10. ...
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The value of the determinant *Image* is (a) 15!+16! (b) 2(15!)(16!)(17!) (c) 15!+16!+17! (d) 16!+17! ...
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Out of (2n+1) tickets numbered consecutively, three are drawn at random. the chance that the numbers on them are in A.P is (a) n2/4n2-1 (b) 2n/4n2-1 (c) 3n/4n2-1 (d) 4n/4n2-1 ...
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If A = {1,2,3,4....18,19} then the number of functions f : A→A such that f(x)=y and sum of digits of x is equal to the sum of digits of y is (a) 540 (b) 219 (c) 218 (d) 720 ...
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If three positive real numbers a, b, c are in A.P. such that abc = 4, then the minimum possible value of b is (a) 23/2 (b) 22/3 (c)21/3 (d) 25/2 ...
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Number of zeroes at the end of the number Î rr where r varies from 1 to 25, is (a) 50 (b) 49 (c) 49 (d) 100 ...
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A car moves along a horizontal circular road of radius r with velocity v. The coefficient of friction between the wheels and the road is mu . Which of the following statements is not true ...
