Mathematics Test Yourself Questions

TEST YOURSELF

1. Multiple Choice Type

Choose the correct answer from the options given below.

Question 1

(c) If $x = ext{√}6 - ext{√}5$, then $x - -$ is equal to:

• Options:
  (a) 1
  (b) 11
  (c) 2√√6
  (d) -2√5

Question 2

(a) Since, $90 = 2 imes 3 imes 3 imes 5$,
What type of decimal is not a terminating decimal:

• Options:
  (i) true
  (ii) false
  (iii) none of these

Question 3

(d) $\frac{2- ext{√3}}{2+ ext{√3}}$ is equal to:

• Options:

Question 4

(b) $ext{√}27$ is irrational and ext{√3 is also irrational, then which of the following is rational:

• Options:
  (i) 4
  (ii) 2√3
  (iii) 1
  (iv) 8√3

Question 5

(i) $ext{√}27 - ext{√}3$
(ii) $ext{√}27 + ext{√}3$
(iii) $ext{√}27 imes ext{√}3$
(iv) none of these

Question 6

(e) Statement (1): If $a = 3 ext{√}3$ and $b = \frac{5}{ ext{√}12}$, then $a imes b$ is irrational.