A positron is an anti-particle of an electron, having the same mass but opposite charge to electron. Then, the minimum energy released in annihilation of matter of a pair of an electron and a positron is nearly
The correct answer is C
If the student scores 30% marks, then he is failed by 200 marks. But if he scores 50% marks then he is passed by 230 marks. Find the passing percentage....
The value of A’s car is depreciating by 45% every year whereas the value of his house is appreciating by 10% each year as compared to the previous yea...
The marks scored by a boy in three subjects are in the ratio 3 : 5 : 7. Boy scored an overall aggregate of 70% in the exam. If the maximum marks in each...
The number of boys and girls in a school is 160 and 220 respectively. 25% of boys left the school while 40 girls took admission in the school. Find the ...
Shiva’s monthly salary is Rs.75,000. He spends Rs.12,000 on household items, Rs.14,000 on LIC and mutual funds, Rs.15,000 on his children’s educatio...
In a colony, there are 120 APL families and 54 BPL families. Each APL and BPL family got blankets equal to 15% and 75%, respectively of total number of ...
84 is what % of 120?
50% students (boys + girls) in a math class are boys. Out of total boys, 65% are literate and 70 are illiterate. Find the number of literate girls in th...
Z spends 60% of his salary and saves the remaining. After his salary is increased by 30%, he saves 55% of the increased amount besides the amount he use...
In 2018, the income-to-expenditure ratio of Vishal was 5:3. The following year, his income increased by 10% while his expenditure rose by 15%. Determine...
