Question
An element "X", having atomic number 16. gains two
electrons to form an anion X. What will be the atomic number of 'X' in the anion?Solution
The correct answer is B
The ratio of P :Q is 3 : 5 and that of Q : R is 4 : 7. If P equals 2400, then what is the value of R?
A student bought 10 pencils and 8 pens at Rs 150. He sells pencil at 4%profit and pen at 7%profit. Overall, he gains Rs 9 Find the cost price of each pe...
An amount of money is divided among L, M and N in the ratio of 3:4:7, respectively. If the amount received by N is Rs.6000 more than the amount received...
The ratio between the number of books and pencils is 7:6 and the ratio of cost of per book and pencil is 3:2 then find the percentage by which total cos...
Find 'X' if the below three numbers are in proportion.
2.6, 1.3, X
Population of a town is 1,02,000. If number of the male increase by 7% and Females increase by 10% then the population of town would increase by 9.5 %. ...
In a class of 455 students, 255 are girls and remaining are boys. Among boys, the ratio of number of boys who are wearing caps to those who are not wear...
- In a company, 60% of the number of girls is equal to two - third of the total number of boys. When 40 new girls joined the company, then 25% of the number ...
If x runs are second by Rohit, y runs by Shreyas and z runs by Virat, then x : y = y : z = 4:3. If total number of runs scored by Rohit, Shreyas and Vir...
What is the fourth proportion of 18, 20 and 23?
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