Question 26

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

The usual form for $2.03 \times 10^{- 5}$ is

(a) 0.203

(b) 0.00203

(c) 203000

(d) 0.0000203

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Solution

Given $2.03 \times 10^{- 5} = 0.0000203$

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Question 24

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

The standard form of 0.000064 is :

(a) $64 \times 10^{4}$

(b) $64 \times 10^{- 4}$

(d) $6.4 \times 10^{- 5}$

Question 20

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

$(- 9)^{3} \div (- 9)^{8}$ is equal to:
(a) $(9)^{5}$
(b) $(9)^{- 5}$
(c) $(- 9)^{5}$
(d) $(- 9)^{- 5}$

Question 11

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

The value of S in $\frac{1}{3} + S = \frac{2}{5}$ is :

(a) $\frac{4}{5}$

(b) $\frac{1}{15}$

(d) 0

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