NDA Mock Test - 3 - Defence MCQ
30 Questions MCQ Test - NDA Mock Test - 3
If f (x) = 2x + 7 and g (x) = x2 + 7, x ∈ R, then which value of x will satisfy fog (x) = 25 ?
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Which one of the following is one of the roots of the equation (b – c) x2 + (c – a) x + (a – b) = 0 ?
Direction : α and β are the roots of quadratic equation 
Q.
Find the value of α and β
α and β are the roots of quadratic equation
Q.
Find the quadratic equation having roots α + 1 and β = – 1
If the sum of the first two terms and the sum of the first four terms of a geometric progression with positive common ratio are 8 and 80 respectively, then what is the 6th term ?
If x > 1 and log2 x, log3 x, logx 16 are in GP, then what is x equal to?
If 2x = 3 + 5i, then what is the value of 2x3 + 2x2 – 7x + 72 ?
then what is A (Adj A) equal to ?
Consider the following statements in respect of symmetric matrices A and B:
1. AB is symmetric.
2. A2 + B2 is symmetric.
Which of the above statements is/are correct ?
then which one of the following is correct?
+3 
is equal toIf ω is an imaginary cube root of unity, then what is the value of the determinant of the matrix 
Out of a group of 20 teachers in a school, 10 teach Mathematics, 9 teach Physics and 7 teach Chemistry, 4 teach both Mathematics and Physics, but none teach both mathematics and Chemistry. What is the number of teachers who teach both Chemistry and Physics ?
If the sides of a triangle are 6 cm, 10 cm and 14 cm, then what is the largest angle included by the sides ? /
For finding the area of a triangle ABC, which of the following entities are required ?
If 2x + 3y = 17 and 2x+2 – 3y+1 = 5, then what is the value of x ?
equal to ? 
then which one of the following is correct ? If (x + a) is a factor of both the quadratic polynomials x2 + px + q and x2 + lx + m, where p, q, l and m are constants, then which one of the following is correct ?
The sines of two angles of a triangle are equal to 5/13 and 99/101. What is the consine of the third angle ?
One radian is approximately equal to which one of the following ?
then what are the smallest positive values of x and y respectively?
he angle of elevation from a point on the bank of a river of the top of a temple on the other bank is 450. Retreating 50m, the observer finds the new angle of elevation as 300. What is the width of the river ?
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