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# Tutor profile: Vishal B.

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Vishal B.
Senior UI Developer
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## Questions

### Subject:Web Development

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Question:

How can you reduce page loading time in modern web applications ?

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Vishal B.

1. Reducing image size if large files are not required. 2. Removing unnecessary widgets used in the web application. 3. Placing CSS at the top and script referencing (Javascript/jQuery) at the bottom or external files. 4. Reducing redirects to multiple pages and caching.

### Subject:Basic Math

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Question:

What is the probability that you could pull 2 Aces out of a deck of 52 cards in 3 tries?

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Vishal B.

What is Probability? It is the chances of occurring any particular event in the investigation process. It always ranges between 0 and 1. How to calculate probability? It can be calculated by dividing the number of favorable outcomes by the total number of outcomes. Calculation: Let x be the event that an ace is picked up from pack of 52 cards. So probability of picking up an ace in a 52 deck of cards which we can denote by P(x) is calculated as: Number of favorable outcomes = 4 (4 aces of 4 suites) Total number of outcomes = 52 (Deck of 52 cards) Therefore, P(x) = 4/52 Now, probability of non-favorable outcomes becomes 1 - P(x) = 1 - 4/52 = 48/52 Finally, probability that we could pull 2 Aces out of a deck of 52 cards in 3 tries can be calculated by a simple formula of combinations (Permutation and Combinations) Required probability = ncr * [P(x)^r] * [(1 - P(x))^(n-r)] - where ^ denotes to the power of = 3C2 * [square of (4/52)] * (48/52) = 0.01638

### Subject:HTML Programming

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Question:

How many HTML tags can be used to separate a section of texts ?

Inactive
Vishal B.

1. <br> tag - Called as break line tag. This tag breaks the current line on web page and passes flow on to the next line. 2. <p> tag - Called as a paragraph tag. This tag is used to contain text in the form of a paragraph, thus helping to separate text sections as we want it. 3. <blockquote> tag - This tag helps to add a large quotation section. Web browsers usually render text inside this tag as a text with indentation.

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