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The amount of a radioisotope remaining un-decayed after a time equal to four times its half-life will be __________ percent.

The amount of a radioisotope remaining un-decayed after a time equal to four times its half-life will be __________ percent. Correct Answer 6.25

The amount of a radioisotope remaining un-decayed after a time equal to four times its half-life will be 6.25 percent.

Related Questions

The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be __________ percent.
Simplify the value of $$\frac{{{\text{0}}{\text{.9}} \times {\text{0}}{\text{.9}} \times {\text{0}}{\text{.9 + 0}}{\text{.2}} \times {\text{0}}{\text{.2}} \times {\text{0}}{\text{.2 + 0}}{\text{.3}} \times {\text{0}}{\text{.3}} \times {\text{0}}{\text{.3}} - {\text{3}} \times 0.9 \times {\text{0}}{\text{.2}} \times {\text{0}}{\text{.3}}}}{{{\text{0}}{\text{.9}} \times {\text{0}}{\text{.9 + 0}}{\text{.2}} \times {\text{0}}{\text{.2 + 0}}{\text{.3}} \times {\text{0}}{\text{.3}} - 0.9 \times {\text{0}}{\text{.2}} - {\text{0}}{\text{.2}} \times {\text{0}}{\text{.3}} - 0.3 \times 0.9}} = ?$$
$$\frac{{38 \times 38 \times 38 + 34 \times 34 \times 34 + 28 \times 28 \times 28 - 38 \times 34 \times 84}}{{38 \times 38 + 34 \times 34 + 28 \times 28 - 38 \times 34 - 34 \times 28 - 38 \times 28}}$$            is equal to = ?
Each of the question below consists of a question and three statements number I, II and III given below it. You have to decide whether the data provided in the statement are sufficient to answer the question. Sid has a monthly income of Rs. 60000 out of which every month he saves some amount. He distributes some amount of money among his three sisters and one brother. Out of remaining amount of his income, he spends 40% on other things and rest of the amount is saved by him. What percent of money is received by each sister if each sister receives equal amount? Statement I: Each sister received Rs. 500 less than the amount received by brother and Sid’s other expenditure is Rs. 16800. Statement II: Sid saves Rs. 25200 on every month. Statement III: Each sister and brother received equal amount and saving are Rs. 25200.
Manu invested 15% of his monthly salary in the FD and 10% in PPF. 3/25th of the remaining amount spent on clothing. 3/11th remaining amount spent on food. 5/12thof remaining spent on education. The remaining amount is invested in a scheme which offers 10% Simple interest from which after 5 years he got Rs. 16800 as the total amount. Find his monthly salary?
P, Q, R and S started a business by making investments a, b, c and d, respectively. The eight times of “a” is equal to four times of “b”. Four times of “b” is equal to five times of “c” and eight time of “c” is equal to seven time of “d”. If the total profit share of Q after one year is ₹ 7440 more than the profit share of S, then, find how much less the profit share of P is than that of R?
What is the total number of employees in the company? Which of the following option is sufficient alone to find the answer? A) In the company, employees like either tea or coffee or cold drink. Out of the total employees, 25% like tea and 40% like coffee. Out of remaining employees, 20% like cold drink and remaining employees don’t like any of these drinks. B) Out of total employees 18% working in the marketing departments, 35% working in IT departments. From the remaining employees 25% working in HR departments and 45% working in content departments and remaining 141 are working in other departments. C) Employees working in the company is form state X, Y and Z. 20% of employees working in the company is from state X and from remaining 60% employees is from state Z and the remaining employees is from the state Y. D) 60% of the employees in the company are married and remaining employees are unmarried. The ratio of male and female unmarried employees is 4 : 5 and ratio of married male and female employees is 3 : 4.
The pie chart given below shows the amount spent by a boy on the purchase of six different items. The total amount spent on all these six items is Rs. 54000. The amount spent on a specific item is represented as a degree with reference to the total amount spent on all these six items. Which of the following statement(s) is/are correct? I. The amount spent on article A is Rs.900 less than the amount spent on article B. II. The amount spent on article C is Rs 2400 more than the amount spent on article D. III. The ratio of the amount spent on article B to the amount spent on article E is 4 : 1.
In the following question, two statements are numbered as A and B. On solving these statements, we get quantities A and B respectively. Solve both quantities and choose the correct option. Quantity A: X and Y started a partnership business by investing in the ratio 5 ∶ 6. Z joined them after 4 months with an amount equal to 2/3rd of that of Y. What was their total profit at the end of the year, if Z got Rs. 28000 as his share? Quantity B: Two friends P and Q started a business investing amount in the ratio of 5 : 6. R joined them after 6 months investing an amount equal to that of Q’s amount. At the end of year 20% profit was earned which was equal to Rs. 98,000. What was the amount invested by R?
$$\eqalign{ & {\text{The}}\,{\text{value}}\,{\text{of}} \cr & \frac{{0.1 \times 0.1 \times 0.1 + 0.02 \times 0.02 \times 0.02}}{{0.2 \times 0.2 \times 0.2 + 0.04 \times 0.04 \times 0.04}}\,\text{is}: \cr} $$