TNPSC Group 2 2017 Official Paper (Held On 6th Aug 2017)

$x^{\frac{3}{2}}:9=16:\sqrt{x}$ What is the value of x ?

Total surface area of hollow hemisphere is equal to

The probability that a leap year will have 53 Fridays or 53 Saturdays is

Factorization of (x + y)² + 9( x + y ) + 8 is

What is the difference between the sum of first 'n' odd natural numbers and that of the first 'n' natural numbers?