If the height is doubled and the base is decreased by 20%, then the ratio of old area of the triangle and new area of the triangle is –

The ratio of the side and height of an equilateral triangle is –

A rectangle has an area 30 cm² and perimeter 26 cm. Its sides (in cm) are

Which letter-cluster will replace the question mark (?) to complete the given series?
 ERKV, HYVK, ?, NMRO, QTCD

Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
 57 * 35 * 44 * 11 * 13 * 40 

Select the correct mirror image of the given combination when the mirror is placed at MNas shown.

Select the most appropriate meaning of the given idiom.
 A fly on the wall

Select the most appropriate meaning of the given idiom.
 Gear up for