How would you change this game to make the final answer 3? What about 5? Class 8

How would you change this game to make the final answer 3? What about 5? Class 8

Question 1.

How would you change this game to make the final answer 3? What about 5? Class 8

Solution:

1. Think of number x.

2. Multiply it by 3 : 3x

3. Add 9 to it: 3x + 9

4. Divide by 3 : x + 3

5. Subtract the original number

x + 3 - x = 3

Similarly, for 5, start with x, multiply it by 5, then add 25, divide by 5 and subtract the original number x.

Question 2.

Find the dates if the final answers are the following: Class 8

(i) 1269

(ii) 394

(iii) 296

You can try this trick with your friends. Ask them to choose the starting date as their birthday.

Solution:

(i) 1269 - 165 = 1104.

So, it is 4th November.

(ii) 394 - 165 = 229.

So, it is 29th February.

(iii) 296 - 165 = 131.

So, it is 31st January.