Four letter-clusters have been given, out of which three

When 15 is added to 30% of a certain number, the result is equal to one-third of that same number. Determine the value of the number.

(32) ^-3/5 = ?

Arjun, Bheem, and Chetan start a business with initial investments of Rs. (p+1500), Rs. 'p', and Rs. (p-1000) respectively.

Find the average of the following set of numbers: 13, 42, 22, 35, 68.

The surface area of a sphere is 154 cm². Find its volume.

I). 2p ²  – 13p + 21 = 0

II). q ²   – 10q + 24 = 0

72, 81, 99, ?,  162, 207

Find the equation of the line passing through the points P(2, 3) and Q(4, 7).

Sum of the present ages of A, B, C and D is 64 years. After 4 years ratio of their ages is 6:5:3:2. What is C’s present age?