TNPSC Group 2 Official Paper (2018)

Complete the series 1 ZA, 3 YB, 6 XC, 10 WD, ?

The product of two numbers is 1600 and their H.C.F is 5, the L.C.M of the number is

A man sells two wrist watches at Rs. 594 each. On one he gains 10% on the other he loses 10%. Find his gain or loss percent on the whole

Simplify: $\frac{{(3^3)}^{-2}\times {(2^2)}^{-3}}{({2^4)}^{-2}\times 3^{-4}\times 4^{-2}}$

The principal amount triples itself at 8% per annum over a certain time. Find the number of years.