How many triangles are there on the puzzle below?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

What is the largest number you can write with just 3 digits?

What does this mathematical rebus means ?

A man died and leaves Rs.10,000 in his will. There are 6 beneficiaries- his 3 sons and their wives. The 3 wives receive Rs.3960 of which Priyanka gets Rs.100 more than Tanu and Neha gets Rs.100 more than Priyanka.
Pramod gets twice as much as his wife, Tushar gets the same as his wife, and Prashant gets 50% more than his wife.

Who is married to whom?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?