Dr. Lal And Jain Solutions for Exercise 2: Quantitative Aptitude

The ratio between the angles of a quadrilateral is $6:3:4:5$ .The smallest angle of a triangle is one-fourth the largest angle of the quadrilateral. The largest angle of the triangle is ${10}^{\circ }$ more than the second-largest angle of the triangle. What is the second largest angle of the triangle?

A bag contains $7$ red balls, $4$ green balls and $5$ yellow balls. What is the probability that $3$ balls drawn at random are either green or yellow?

Six boys or four men can complete a piece of work in $24$ days. In how many days will $3$ boys and $10$ men together complete the same piece of work?

What approximate value will come in place of question-mark (?) in the following question? (You are not expected to calculate the exact value)

$2\frac{2}{7}\times \frac{4}{5}÷1\frac{1}{19}\times 4\frac{1}{7}=?$

What approximate value will come in place of question-mark (?) in the following question? (You are not expected to calculate the exact value)

$(14\cdot 98{)}^2-(3\cdot 99{)}^3+(8\cdot 01{)}^3=?$

What approximate value will come in place of question-mark (?) in the following question? (You are not expected to calculate the exact value)

$35\cdot 01\mathrm{\%} \text{of }999+19\cdot 99\mathrm{\%} \text{of }601=?$

What approximate value will come in place of question-mark (?) in the following question? (You are not expected to calculate the exact value)

What approximate value will come in place of question-mark (?) in the following question? (You are not expected to calculate the exact value)

$1401÷29\cdot 98\times 9\cdot 96-100\cdot 01=?$