Faster than a calculator. Effective trick and its solution

EFFECTIVE FOCUSES AND THEIR CLUES
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Faster than a calculator. Focus Secret

Spectacular tricks and their clues

Directory / Spectacular tricks and their clues

Focus Description:

Invite two spectators to a quick count competition. Report that supernatural powers are on your side, calculators are on the audience's side. Nevertheless, you will have time to make the calculations first.

For brevity, call the first spectator player A and the second player B. Give them paper and pencils and ask them to write the letters A and B on the pieces of paper at a distance of about 2,5 cm from each other; Do the same on your sheet.

A B

Ask player A to name any three-digit number consisting of its different digits, for example 625. Then all three write it under the letters:

A B

625 625

Now ask player B to name another three-digit number, also consisting of different numbers - let it be 784. Write this number together again (each on a piece of paper), but only in column A:

A B

625 625

784

Say you don't want to be left behind, and you'll put in your number too. To both opponents, it will seem randomly chosen, but in fact it is not. Before naming him, quickly subtract in your mind - from the number 999, subtract the one that player B named (999 - 784 = 215), and tell the players the resulting number. Ask them to write this score down under the first number in column B. Then move on to the speed count competition:

A B

625 625

784 215

Give players A and B a calculator. Explain that you are asking to multiply two numbers in their columns and then add both products. You will have to perform these arithmetic operations in your mind. When both players understand what is required of them, do the calculations on command.

Focus secret:

You yourself can calculate the number very quickly. To do this, subtract one from the first number (625) and enter the result (624); then subtract it from 999: 999 - 624 = 375 and write it next to the first one. This is the number you are looking for! It will take you a matter of seconds to calculate, while your players will spend much more time fiddling with the calculations:

A B

625 625

784 215

430000+134375=624375

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