Find the LCM of 3(a-1), 2 (a-1)² , (a² -1)

Find the cube root of 1(61/64)

The ratios of the respective heights and the respective radii of two cylinders are 1 : 2 and 2 : 1 respectively. Then their respective volumes are in the ratio.

At what rate of interest a sum of money doubles itself in 10 years in simple interest?

In a Geometric progression t₂ = 3/5;t₃ = 1/5 Then the common ratio is

If a₁ = -1 then find a₂, a₃ in a_n = $ \dfrac{a_{n-1}}{n+2},n>1 \forall n \in N $

If 1+2+...+n = K then 1³ + 2³ + ... +n³ is equal to
(c) K(K+1)/2

The common ratio of the G.P. a^m-n, a^m, a^m+n is

Match List I and List II :

The compound used in breath analysis test for drunken driving is