Sequences and S...

The average IQ of $$4$$ people is $$110$$. If three of these people each have an IQ of $$105$$, what is the IQ of the fourth person?

An example of G.P. is

Identify a geometric progression.

Find the next number in the series.
$$3, 6, 9, 12, 15,....$$

Which of the following is not in the form of G.P.?

Which of the following is $$GP?$$

The difference of the squares of two consecutive even integers is divisible by which of the following integers?

The 8th term of the sequence 1, 1, 2, 3, 5, 8 ............... is

The sum of two numbers is $$80$$. If the larger number exceeds four times the smaller by $$5$$, what is the smaller number?

$$\left( { 2 }^{ 2 }+{ 4 }^{ 2 }+{ 6 }^{ 2 }+.......+{ 20 }^{ 2 } \right) =$$?