Question
A bank notices unusual activity in a customer’s
account, such as multiple large withdrawals in a short period. What is the most appropriate technique to detect fraud in such cases?Solution
Anomaly detection identifies data points that deviate significantly from the norm. In fraud detection, it flags unusual transactions, such as large withdrawals or geographically improbable activity, for further investigation. Techniques like isolation forests or Z-scores are commonly used. Option A : Logistic regression predicts binary outcomes but isn’t specialized for anomalies. Option C : Clustering groups similar data but doesn’t detect deviations effectively. Option D : Decision trees classify data but are not optimal for real-time anomaly detection. Option E : A/B testing is unrelated to fraud detection.
An item is tagged 20% over its cost price and sold after offering a 10% discount. What is the profit or loss percentage?
A fruit seller buys oranges at the rate of 11 for ₹55. How many oranges should he sell for ₹54 to gain 20%?
A shopkeeper sold an article for Rs. 600 after offering a discount of 40%. If he earned a profit of 50%, then find the ratio of cost price to the marked...
A trader marked an article 40% above its cost price and sold it after allowing a discount of 25%. If the transaction resulted in a profit of Rs. 30, the...
The cost price of 25 apples is Rs.50. If it is sold at 20% profit, then how many apples will be sold for Rs.60?
By selling an article at a price of Rs 1170 a shopkeeper suffered a loss of 10%, then at what price the shopkeeper must sell the article to get 20% profit?
A shopkeeper marked an article Rs. 850 above its cost price and sold it after giving a discount of 30% and earned a profit of 20%. Find the cost price o...
A seller marked his article 80% above the cost price and sold it after offering two successive discounts of 60% and 25% respectively. In the whole trans...
- A businessman sold a commodity for Rs. 4,250 and gained a profit of 25%. Find the new selling price if he decides to earn only 15% profit.
The ratio of cost price to the marked price of an article is 5:8. The article had been marked above its cost price by Rs. 720. If the article was sold a...