Quantitative Aptitude - Arithmetic Ability Questions

Which of the following quadratic equations has equal roots?

When 2x + 2x = 3, then x3 + 1x + 2 value is

If sec θ (cos θ + sin θ) = √2, then what is the value of (2 sin θ)/(cos θ – sin θ)?

Select the odd word/letters/number/number pair from the given alternatives.

In the following question, select the odd word from the given alternatives.

What is the difference (in Rs) between compound interest (compounded annually) and simple interest for 3 years on a principal of Rs 3000 at the annual rate of 20%?

A businessman imported Laptops, worth Rs 210000, Mobile phones worth Rs 100000 and Television sets worth Rs 150000. He had to pay 10% duty on laptops, 8% on Phones and 5% on Television sets as a special case. How much total duty (in Rupees) he had to pay on all items as per above details?

Incentre of Δ ABC is I. ∠ABC = 90° and ∠ACB = 70°. ∠AIC is