Question
A plane electromagnetic wave travels in vacuum along
z-direction. What can you say about the directions of its electric and magnetic field vectors? If the frequency of the wave is 50 MHz, what is its wavelength?Solution
Determine how many composite numbers exist between 61 and 99?
The monthly incomes of A and B are in the ratio of 5:6. A's monthly savings are 50% higher than B's monthly savings, while A's monthly expenditure equal...
115, 138, 163, 190, 219, ?
What is the total number of packages delivered in February across all regions, and what percentage does it contribute to the total packages delivered in...
Quantity I: A shopkeeper sold an article for Rs.1500 and made a profit of Y%. If he increases the selling price by Rs.400, he can make a profit of (Y +...
Solve log₂(x–1) + log₂(x+3) = 3.
How can you freeze both rows and columns in an Excel spreadsheet?
A trader marks the price of a product at â‚ą800 and allows a discount of 15%. If the trader also pays a tax of 5% on the discounted price, what is the t...
Two cards are drawn from a well-shuffled pack of 52 cards. What is the probability that both are aces?
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