# Brain Practice Answers

November 2018

## Did you try each several times?

Here are the answers to Brain Practice, November 2018

**Social Media Challenge**

The answer is 20.

How did we reach that?

If Facebook = F, Google = G, Twitter = T, Pinterest = P

Follow the reasoning …….

Now our puzzle question becomes:

⇒ F + F + F = 12

⇒ G + F + T = 18

⇒ P – T = 2

⇒ G + F + P = ??

### ♣ 1st Equation:

3F = 12 ⇒ F = 12/3 ⇒ F = 4

### ♣ 2nd Equation:

G + F + T = 18 ⇒ G + 4 + T = 18 ⇒ G + T = 18 – 4 ⇒ G + T = 14

(Now, as you can see we can’t solve this further yet, but let’s try next equation)

### ♣ 3rd Equation:

P – T = 2

(Now compare/add this equation with the 2nd equation i.e G + T = 14)

G + T + P – T = 14 + 2 (+T and -T cancel out each other and we get)

G + P = 16

### ♣ 4th Equation:

G + F + P = ??

We don’t know the individual values of G & P here, but we know G + P = 16 (from 3rd equation) & F = 4 (from 1st equation), put their value in the 4th equation and you will get the answer.

(G + P) + F = ?? ⇒ 16 + 4 ⇒

**20 Answer**

**How Old is Granny?**

**Tom’s Granny is 58 years old.**

Let’s see why:

First child born: Granny is 19

Second child born: Granny is 23 (19 + 4)

Third child born: Granny is 27 (23 + 4)

Fourth child born: Granny is 31 (27 + 4)

Fifth child born: Granny is 35 (31 + 4)

Sixth child born: Granny is 39 (35 + 4)

Sixth child is 19: Granny is 58 (39 + 19)

**Build a bridge with three glasses and three knives?**

**Solve these Riddles?**

What building has the most stories? **A library of course!**

If two’s company and three’s a crowd, what’s four and five? **Nine**

If you throw a white stone into the Red Sea, what would it become?** Wet**

(I know you are groaning! )

**Complete the Sequence**

## Need more practice?

Healthy Memory Workout is an eBook full of ‘how-to’s’ and puzzles to challenge your brain