Recent questions tagged engineering-mathematics

1 votes
2 answers
961
Let E and F be any two events with P(E U F)= 0.8, P(E) = 0.4 and P (E/ F) = 0.3. Then P (F) is(a) 3/7(b) 4/7(c) 3/5(d) 2/5
0 votes
0 answers
962
0 votes
1 answer
963
A x B is a vector(a) Parallel to A, but perpendicular to B(b) Parallel to B, but perpendicular to A.(c) Perpendicular to both A &B(d) Parallel to both A & B
0 votes
0 answers
964
The value of t for which A+ tB is perpendicular to C where A = i +2j + 3k, B = -i+2j+k and C = 3i+ j(a) 5(b) 4(c) 12(d) 0
0 votes
1 answer
966
0 votes
2 answers
967
0 votes
1 answer
970
0 votes
1 answer
971
0 votes
1 answer
972
0 votes
0 answers
977
0 votes
2 answers
978
1 votes
3 answers
979
0 votes
1 answer
980
$x^3$ + $x$ sin $x$ isa) Constant functionb) Odd functionc) Even functiond) Periodic function
1 votes
1 answer
981
A box contains 5 black and 5 red balls. Two balls are one after another from the box, without replacement. The probability of both balls being red isa) 1/90b) 1/5c) 19/...
0 votes
1 answer
982
The value of k for which the lines 2x + y -1 = 0,4x + 3y - 3 = 0 and 3x + ky - 2 = 0. are concurrent isa) -2b) 3c) 2d) -3
0 votes
3 answers
983
3 votes
1 answer
984
0 votes
2 answers
985
0 votes
1 answer
987
Equation of a straight line passing through the point (-1,2) and making equal intercepts on the axes isa) x -y =1b)x-2y=1c)x+y=1d) x-y=2
1 votes
0 answers
988
0 votes
1 answer
989
0 votes
1 answer
990
If a,b,c are the roots of equations $x^3$ + p$x^ 2$ +q$x$+p=0, Then the value of $$tan^{-1} a+ tan^{-1 }b+tan^{-1}c$$ isa) n π /4b) n π /2c) n πd) 2n π