Part 1, Articles in English Grammar, Articles a, an, the, A/An/The article in English grammar hindi

Why iron articles are painted?

In a class, 30% students fail in English, 20% students fail in Hindi and 10% students fail in both English and Hindi. A student is chosen at random, then what is the probability he fail in English, if he has failed in Hindi?

Kombu, an article of marine food is

The cost price of 20 articles is same as the selling price of 16 articles. Find the gain percent.

Anushree has to pay 4% sales tax in addition to the price of a certain article. Find the price of the article , if she pays Rs 2.60 in all.

A dealer sells an article for Rs. 24 and gains as much percent as the cost price of the article. Find the cost price of the article.

A shopkeeper bought an article for Rs 3,450. He marks the price of the article 16% above the cost price. The rate of sale tax charged on the article is 10%. Find the : (i) marked price of the article. (ii) price paid by a customer who buys the article.

If the selling price of 10 articles is the same as the cost price of 12 articles, find gain percent.

A lot contains 20 articles. The probability that the lot contains exactly 2 defective articles is 0.4 and the probability thatthe lot contains exactly 3 defective articles is 0.6. Articles are drawn in random one by one without replacement andtested till all the defective articles are found. What is the probability that the testing procedure ends at the twelfth testing ?

Rita went to a shop to purchase an article A with MRP = rupes 850 and rate of GST = 12% How much will Rita pay for this article? If instead of article A , Rita purchases some other article B with MRP = rupes 1,200 and rate of GST = 18% find now much extrea money will she pay to the shopkeper?