# IQ Test Labs

### Mathematical intelligence

We all require some numerical skills in our lives, whether it is to calculate our weekly shopping bill or to budget how to use our monthly income. Flexibility of thought and lateral thinking processes are a few skills which are needed in order to solve these problems. Mathematical intelligence generally represents your ability to reason and to calculate basic arithmetic computations. It also helps you to understand geometric shapes and manipulate equations.

Mathematical intelligence is a strong indicator of general intelligence because many every day mental tasks require arithmetical operations even though numbers may not be involved.

21. According to a formula, the max regions formed when four circles intersect is 13.

Given n intersecting circles, the correct formula is:

1. n x (n - 2) + 2
2. n x (n - 1) + 3
3. n x (n - 2) + 1
4. n x (n - 1) + 1

n x (n - 1) + 1

22. Cameroon, France, Germany and Italy comprise group 'D' of a soccer competition. How many games are to be played if all countries play with each other once?

1. 3
2. 4
3. 6
4. 8

C. 6 games.

In calculations involving combinations, order is irrelevant.

nCr=n!/r!(n-r)!

where: n= total number of teams(4)

r= number of teams(2)

23. Spain, Belgium and China comprise group 'A' of a soccer competition. In this group two countries will qualify for the knock out stage. How many different ways can these two teams be ordered?

1. 3
2. 4
3. 6
4. 8

C. 6 ways of ordering the top two teams.

In calculations involving permutations, order is relevant.

Formula: nPr=n!/(n-r)!

where: n= total number of teams (3)

r= number of teams (2)

24. Joe, Jane and Mary are in the park chatting on a bench. How many different ways can they be seated?

1. 3
2. 4
3. 6
4. 8

C. There are 6 different seating arrangements.

In calculations involving permutations, order is relevant.

Formula: nPr=n!/(n-r)!

where: n= total number of people (3)

r= number of people(3)

25. Jenna is going to a party and has 4 tops, 3 skirts and a pair of shoes in her wardrope. How many possible outfits can she create?

1. 8
2. 10
3. 12
4. 14
5. 18

The total number of outcomes is calculated by multiplying all the events together.

4*3*1=12 outfits.