Bonds with original maturities of one year or less

If 9x² + 16y² = 24xy, then find the ratio of ‘x’ and ‘y’, respectively.

If (r + s + t) = 12 and (rs + st + tr) = 60, then find the value of (r² + s² + t²).

Evaluate (998)³ without multiplying directly.

For a =-4 and b = 5, value of a² – b² is:

A train can cross a pole, a bridge of 720 meter long and platform of 640 meter long in 9 seconds, _____ seconds and 25 seconds, respectively.

(288 ÷ 8)² × (144 ÷ 24)³ = 24 × ? × (51840 ÷ 20)

If     = 4 then

If tan x + cot x  = 7, find  tan³ x + cot³ x = ?

If A = (7)^1/3 + (7) ^-1/3, then the value of {3A³ – 9A} will be:

If n = 3 + √2, then find the value of (n + 1/n)².