What does R stand for in term

(I) 10x² - 7x + 1 = 0 (II) 35y² - 12y + 1 =0

If sec θ + tan θ = m(> 1), then the value of sin θ is (0° < θ < 90°)

If (2x + 3y+ 4) (2x + 3y 5) is equivalent to (ax² + by² + 2hxy + 2gx + 2fy + c), then what is the value - of ((g + f – c) / abh}?

If 0 ≤ θ ≤ 90°, and sec¹⁰⁷ θ + cos¹⁰⁷ θ = 2, then. (secθ + cosθ) is equal to:

If P = 7 + 4√3 and PQ = 1, then what is the value of 1/P² + 1/Q²?

The expression of (cot θ + cosec θ −1) / (cot θ − cosec θ+1) is equal to

An urn contains 3 green, 5 blue, 6 black and 4 yellow marbles.

If 3x + 5y + 7z = 49 and 9x + 8y + 21z = 126, then what is the value of y?

If a + b + c = 0 then the value of (1/(a+b)(b+c)) + (1/(b+c)(c+a)) + (1/(c+a)(a+b)) is

There are 6 blue pens, 5 black pens and 4 green pens in a bag. Three pens are chosen randomly.