1.
ab = ba but b ≠ a, then find a + b.
2.
4n = 4096, then find 2n – 5.
4.
In ³√5, 5 is called ……………….. . (Fill in the blanks)
5.
√X is a perfect square. Which of the following is/are true?
6.
If 496 x 492 = x² – 4 (x>0), then x=——–
7.
In a cyclic quadrilateral PQRS, PS = PQ, RS = RQ and ∠PSQ = 2∠QSR, then find ∠QSR.
8.
Y is an integer satisfying -3 ≤ 4Y – 7 ≤ 5. How many such values are possible?
9.
In case of discounted sale, the sales tax is calculated on the printed price. Is it true or false?
10.
If P = 3 x³ – 5x + 9, Q = 4x³ + 5x² – 11 and R = 5x³ + 4x² – 3x + 7, then P – 2Q + R is
11.
A non-recurring non-terminating decimal number is always :
12.
What should be subtracted from x³ + 2x² -3x +6, so that the difference is a multiple of x − 2 ?
13.
Which of the given options is a similar surd?
14.
What is the quotient when (x³ − 8) is divided by (x² + 2x +4)?
15.
In a quadratic equation ax² + bx + c = 0, b² − 4ac < 0, then:
16.
A system of two linear equations having same two variables but having no solution is known as inconsistent system of linear equation.
17.
³√5 is an irrational number as well as a surd. State true or false.
18.
Which of the following is/are true?
19.
If the quadratic x2 + ( a – 4 ) x + ( a + 4 ) is a perfect square, then a = ________
20.
After how many decimals will a fraction with denominator 320 will terminate?
