MCQ 11 Mark
By what rational number should $\frac{-5}{24}$ be multiplied to get 10 ?
View full question & answer→MCQ 21 Mark
$\frac{-1}{4} \times\left[\frac{2}{5}+\left(\frac{-5}{6}\right)\right]=?$
- ✓
$\left[\frac{-1}{4} \times \frac{2}{5}\right]+\left[\frac{-1}{4} \times\left(\frac{-5}{6}\right)\right]$
- B
$\left[\frac{-1}{4} \times \frac{2}{5}\right]-\left(\frac{-5}{6}\right)$
- C
$\frac{2}{5}+\left(\frac{-1}{4}\right) \times\left(\frac{-5}{6}\right)$
- D
$\left[\frac{2}{5}+\left(\frac{-5}{6}\right)\right]-\frac{1}{4}$
AnswerCorrect option: A. $\left[\frac{-1}{4} \times \frac{2}{5}\right]+\left[\frac{-1}{4} \times\left(\frac{-5}{6}\right)\right]$
View full question & answer→MCQ 31 Mark
Which of the following expressions shows that rational numbers are associative under multiplication?
- ✓
$\frac{4}{5} \times\left(\frac{-6}{7} \times \frac{8}{9}\right)=\left(\frac{4}{5} \times \frac{-6}{7}\right) \times \frac{8}{9}$
- B
$\frac{4}{5} \times\left(\frac{-6}{7} \times \frac{8}{9}\right)=\frac{4}{5} \times\left(\frac{8}{9} \times \frac{-6}{7}\right)$
- C
$\frac{4}{5} \times\left(\frac{6}{7} \times \frac{8}{9}\right)=\left(\frac{8}{9} \times \frac{4}{5}\right) \times \frac{-6}{7}$
- D
$\left(\frac{4}{5} \times \frac{-6}{7}\right) \times \frac{8}{9}=\left(\frac{-6}{7} \times \frac{4}{5}\right) \times \frac{8}{9}$
AnswerCorrect option: A. $\frac{4}{5} \times\left(\frac{-6}{7} \times \frac{8}{9}\right)=\left(\frac{4}{5} \times \frac{-6}{7}\right) \times \frac{8}{9}$
View full question & answer→MCQ 41 Mark
Which rational numbers are equal to their reciprocals?
AnswerCorrect option: C. $-1,1$
View full question & answer→MCQ 51 Mark
The reciprocal of a negative rational number
- A
is a positive rational number
- ✓
is a negative rational number
- C
can be either a positive or a negative rational number
- D
AnswerCorrect option: B. is a negative rational number
View full question & answer→MCQ 61 Mark
The product of additive inverse and multiplicative inverse of $\frac{-1}{4}$ is
- A
- ✓
$-1$
- C
$0$
- D
$\frac{-1}{16}$
View full question & answer→MCQ 71 Mark
The multiplicative inverse of $\frac{-5}{12}$ is
- A
$\frac{5}{12}$
- B
$\frac{12}{5}$
- ✓
$\frac{-12}{5}$
- D
$\frac{2}{15}$
AnswerCorrect option: C. $\frac{-12}{5}$
View full question & answer→MCQ 81 Mark
The arrangement of rational numbers $\frac{-7}{10}, \frac{5}{-8}, \frac{2}{-3}$, in ascending order is
- A
$\frac{2}{-3}, \frac{5}{-8}, \frac{-7}{10}$
- ✓
$\frac{-7}{10}, \frac{2}{-3}, \frac{5}{-8}$
- C
$\frac{5}{-8}, \frac{-7}{10}, \frac{2}{-3}$
- D
$\frac{-7}{10}, \frac{5}{-8}, \frac{2}{-3}$
AnswerCorrect option: B. $\frac{-7}{10}, \frac{2}{-3}, \frac{5}{-8}$
View full question & answer→MCQ 91 Mark
Identify a rational number between $\frac{1}{3}$ and $\frac{4}{5}$.
- A
$\frac{1}{4}$
- B
$\frac{9}{10}$
- ✓
$\frac{17}{30}$
- D
$1 \frac{7}{10}$
AnswerCorrect option: C. $\frac{17}{30}$
View full question & answer→MCQ 101 Mark
The additive inverse of $\frac{-5}{12}$ is
- ✓
$\frac{5}{12}$
- B
$\frac{12}{5}$
- C
$\frac{-12}{5}$
- D
$\frac{2}{15}$
AnswerCorrect option: A. $\frac{5}{12}$
View full question & answer→MCQ 111 Mark
A rational number between $\frac{1}{5}$ and $\frac{1}{2}$ is
- A
$\frac{1}{10}$
- B
$\frac{1}{20}$
- C
$\frac{7}{10}$
- ✓
$\frac{7}{20}$
AnswerCorrect option: D. $\frac{7}{20}$
View full question & answer→MCQ 121 Mark
Between any two given rational numbers we can find
- A
one and only one rational number
- B
only two rational numbers
- C
only ten rational numbers
- ✓
infinitely many rational numbers
AnswerCorrect option: D. infinitely many rational numbers
View full question & answer→MCQ 131 Mark
$\frac{4}{9} \div ?=\frac{-8}{15}$
- A
$\frac{-32}{45}$
- B
$\frac{-8}{5}$
- C
$\frac{-9}{10}$
- ✓
$\frac{-5}{6}$
AnswerCorrect option: D. $\frac{-5}{6}$
View full question & answer→MCQ 141 Mark
$\left(\frac{-5}{9} \div \frac{2}{3}\right)=?$
- A
$\frac{-5}{2}$
- ✓
$\frac{-5}{6}$
- C
$\frac{-10}{27}$
- D
$\frac{-6}{5}$
AnswerCorrect option: B. $\frac{-5}{6}$
View full question & answer→MCQ 151 Mark
$\left(\frac{-9}{16} \times \frac{8}{15}\right)=?$
- ✓
$\frac{-3}{10}$
- B
$\frac{-4}{15}$
- C
$\frac{-9}{25}$
- D
$\frac{-2}{5}$
AnswerCorrect option: A. $\frac{-3}{10}$
View full question & answer→MCQ 161 Mark
Which of the following numbers is in standard form?
- A
$\frac{-12}{26}$
- B
$\frac{-49}{70}$
- ✓
$\frac{-9}{16}$
- D
$\frac{28}{-105}$
AnswerCorrect option: C. $\frac{-9}{16}$
View full question & answer→MCQ 171 Mark
The product of two numbers is $\frac{-16}{35}$. If one of the numbers is $\frac{-15}{14}$, then the other is
- A
$\frac{-2}{5}$
- B
$\frac{-8}{3}$
- C
$\frac{8}{15}$
- ✓
$\frac{32}{75}$
AnswerCorrect option: D. $\frac{32}{75}$
View full question & answer→MCQ 181 Mark
The sum of two rational numbers is -3 . If one of the numbers is $\frac{-7}{5}$, then the other number is
- ✓
$\frac{-8}{5}$
- B
$\frac{8}{5}$
- C
$\frac{-6}{5}$
- D
$\frac{6}{5}$
AnswerCorrect option: A. $\frac{-8}{5}$
View full question & answer→MCQ 191 Mark
What should be subtracted from $-\frac{7}{8}$ so as to get $\frac{5}{12}$ ?
- A
$\frac{31}{24}$
- B
$\frac{8}{5}$
- ✓
$\frac{-31}{24}$
- D
$\frac{-6}{8}$
AnswerCorrect option: C. $\frac{-31}{24}$
View full question & answer→MCQ 201 Mark
What should be added to $\frac{-3}{4}$ to get $\frac{7}{6}$ ?
- A
$\frac{11}{24}$
- B
$\frac{9}{24}$
- C
$\frac{10}{25}$
- ✓
$\frac{23}{12}$
AnswerCorrect option: D. $\frac{23}{12}$
View full question & answer→MCQ 211 Mark
A number of the form $\frac{p}{q}$ is said to be a rational number if
- A
$p$ and $q$ are whole numbers and $q \neq 0$.
- B
$p$ is a whole number and $q$ is a natural number.
- ✓
$p$ and $q$ are integers and $q \neq 0$.
- D
$p$ and $q$ are integers and $p \neq 0, q \neq 0$.
AnswerCorrect option: C. $p$ and $q$ are integers and $q \neq 0$.
View full question & answer→MCQ 221 Mark
$a$ and $b$ are two rational numbers such that $a+b=3$. When we divide $a$ by $b$, the closure property of rational numbers does not hold true. The values of $a b$ and $a-b$ respectively are:
View full question & answer→MCQ 231 Mark
$p$ and $q$ are two non-zero unequal rational numbers. Which of the following can't be equal to 1 ?
(i) $\frac{p-q}{q-p}$ $\quad$(ii) $\frac{p+q}{q+p}$$\quad$(iii) $\frac{p q}{q p}$ $\quad$(iv) $\frac{p}{q} \div \frac{q}{p}$
View full question & answer→MCQ 241 Mark
The rational number that must be added to the sum of $\frac{3}{7},-\frac{8}{21}$ and $-\frac{3}{14}$ to get the result $\frac{-5}{14}$ is:
- ✓
$\frac{-4}{21}$
- B
$\frac{4}{21}$
- C
$\frac{-5}{21}$
- D
$\frac{-1}{6}$
AnswerCorrect option: A. $\frac{-4}{21}$
View full question & answer→MCQ 251 Mark
$\frac{2}{5}$ of total number of students of a school come by a car, while $\frac{1}{4}$ of students come by bus to school. All the other students walk to school, of which $\frac{1}{3}$ walk their own and rest are escorted by their parents. If 224 students come to school walking on their own, how many students study in that school?
View full question & answer→MCQ 261 Mark
A, B, C, D and E went to a restaurant for dinner. A paid $\frac{1}{2}$ of the bill, B paid $\frac{1}{5}$ of the bill and rest of the bill was shared equally by C, D and E. What fraction of the bill was paid by each?
- A
$\frac{3}{5}$
- B
$\frac{2}{5}$
- C
$\frac{3}{10}$
- ✓
$\frac{1}{10}$
AnswerCorrect option: D. $\frac{1}{10}$
View full question & answer→MCQ 271 Mark
Ramesh earns $₹ 40,000$ per month. He spends $\frac{3}{8}$ of income on food, $\frac{1}{5}$ of the remaining on LIC premium and $\frac{1}{2}$ of the remaining on other expenses. Find how much money is left with him?
- A
₹ $8,000$
- ✓
₹ $10,000$
- C
₹ $15,000$
- D
₹ $16,000$
AnswerCorrect option: B. ₹ $10,000$
View full question & answer→