Which of the following is correct?
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Which of the following quadratic equations has real roots?
What is the perimeter of the sector whose central angle is 60° and radius of the circle is 21 cm?
A shopkeeper by selling 21 Nike shoes, earns a profit equal to the selling price of 5 Nike shoes. His profit percentage is
If 13A = 11B = 8C, find A : B : C
The price of an article is cut by 9%, to restore to its original value, the new price must be increased by
If 2x - 3 ≤ 5 + x and 5 - x < 1 + 5x; then x can take which of the following values?
Prahlad has done 1/3rd of a job in 30 days, Sarfaraz completes the rest of the job in 90 days. In how many days can they together do the job?