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How many pairs of letters are there in the word “HELICOPTER” each of which have as many letters between them in the word as they have between them i...
Currently, the combined age of Rajesh and Ramesh is 77 years. One year ago, the ratio of their ages was 7:8, with Rajesh being 7 parts and Ramesh being ...
Rakesh travels a certain distance with a constant speed of 24 km/h such that he reaches 2 hours late. If he travelled at constant speed of 30 km/h he wo...
A shopkeeper bought article ‘A’ for Rs. ‘x’ and marked it 25% above its cost price and sold it for Rs. 4000. Marked price of article ‘B’ is ...
Simplify the following expression: (5x + 7) 2 + (5x – 7) 2 .
Two inlet pipes 'A' and 'B' can fill an empty tank in 48 minutes and 80 minutes, respectively. Another outlet pipe 'C' can empty the tank in 120 minutes...
Find two numbers whose highest common factor (HCF) is 24 and least common multiple (LCM) is 144, and determine their product.
A school bag is sold for Rs.360 after giving two successive discounts of 10% and 20%. If school bag is marked up by Rs.280 above its cost price, then fi...
Roshan purchased 100 rolls of paper for Rs. 20 per roll. He spent Rs. 400 on their transportation. He also paid 20 paise per roll for packing of each ro...