10th Standard Math’s Chapter 2

Q.11 If n is a rational number, then 5²ⁿ − 2²ⁿ is divisible by

Q.12 The H.C.F of 441, 567 and 693 is

Q.13 On a morning walk, three persons step off together and their steps measure 40 cm, 42 cm and 45 cm, respectively. What is the minimum distance each should walk so that each can cover the same distance in complete steps?

Q.14  The zeroes of the quadratic polynomial x² + 99x + 127are

Q.15 If the zeroes of the quadratic polynomial x² + bx + c , c ≠ 0are equal, then

Q.16 The number of polynomials having zeroes as –2 and 5 is

Q.17 The degree of the polynomial (x + 1)(x² – x – x⁴ +1) is:

Q.18 If the zeroes of the quadratic polynomial x² + (a + 1)x + b are 2 and –3, then

Q.19 Given that one of the zeroes of the cubic polynomial ax³ + bx² + cx + d is zero, the product of the other two zeroes is

Q.20

If one of the zeroes of the cubic polynomial x³ + ax² + bx + c is –1, then the

Product of the other two zeroes is