NAT I Engineering Mathematics MCQs With Answers

If the sum of the roots of (a + 1)x² + (2a + 3)x + (3a + 4) = 0 is -1, then product of the roots is

If A = (3,8) and B = (5,6) then the distance between A and B is

If 2 Sin x Cos 2 x = Sin x then?

Which is not included in the domain of Cos^-1 x

The set of complex numbers forms a group under the binary operation of

Which is an explicit function

In a school, there are 150 students. Out of these 80 students enrolled for mathematics class, 50 enrolled for English class, and 60 enrolled for Physics class. The student enrolled for English cannot attend any other class, but the students of mathematics and Physics can take two courses at a time. Find the number of students who have taken both physics and mathematics.

The mid point of the line joining (=1,-3) to(3,-5) is

There are 30 Red, 20 Green and some Blue bells in a bag if the probability of finding a Red ball is 1/3,how many are red balls in the bag

If the diagonal of a square has coordinates (1,2) and(5,6) the length of a side is

Unit vector in the positive direction of x-axis is