If 2sin²θ–5sinθcosθ+7cos²θ=1then possible values of tan θ are

In an alloy, there is 12 % of copper, to get 69 kg of copper, how much alloy will be required? 

If P : Q = 4 : 5 and P : R =2 : 3, then what is 3P : 4Q : 5R?

Marked price of an item is Rs 200. On purchase of 1 item discount is 22 % on purchase of 4 items discount is 33 % Rabia buys 5 items, what is the effective discount? 

Mohan purchased an article and sold it for Rs 2817.50 and earned 15% profit on the cost price. What was the cost price of the article?

If two LED TVs and one mobile phone cost ₹31,000, while two mobile phones and one LED TV cost ₹35,000, then the value of one mobile phone is:

If the selling price of a shirt is reduced from 440 to ₹410, the loss increases by 4%. What is the cost price of the shirt?

What will be the value of x³+y³+z³-3xyz when x+y+z=9 and x²+y²+z²=31?