Question 2

Out of the four options, only one is correct. Write the correct answer.

Number of terms in the expression $3 x^{2} y - 2 y^{2} z - z^{2} x + 5$ is

(a) 2
(b) 3
(c) 4
(d) 5

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Solution

The terms in the expression are $3 x^{2} y, - 2 y^{2} z, - z^{2} x$ and 5. Hence, the total number of terms are 4.

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3 x^{2} y - 2 y^{2} z - z^{2} x + 5

3 x^{2} y - 2 y^{2} z - z^{2} x + 5

Question 6

In the following question, out of the four options, only one is correct. Write the correct answer:

The value of ${(\frac{2}{5})}^{- 2}$ is
(a) $\frac{4}{5}$
(b) $\frac{4}{25}$
(c) $\frac{25}{4}$
(d) $\frac{5}{2}$

Question 6

In the following question, out of the four options, only one is correct. Write the correct answer:

The value of ${(\frac{2}{5})}^{- 2}$ is
(a) $\frac{4}{5}$
(b) $\frac{4}{25}$
(c) $\frac{25}{4}$
(d) $\frac{5}{2}$

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