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Q: How do you make -2 using all four operations and only the numbers -1 -2 -3 -5 and -7?

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8(22 - 1)

8

hyp~95# 34 £

There are no consecutive whole numbers that make 5.25 using simple arithmetical operations.

5*4+3+2

how do i make 17 using only 2 4 6 8

(1 + 5 - 3) * 8 = 24

One possible answer is 194 + 6

20 + 20 + 20 + 20 + 20 = 100

You can't unless something is missing in your question.

3*3*2*1 = 18 of them.

By simply re-ordering the digits, you can get 500 6-digit numbers, excluding those starting with 0. There are thousands more that can be made using mathematical operations such as addition, subtraction, multiplication, division, exponentiation, factorials and so on.

1234

4+1=5... 5x2=10... 10+3=13 !

Using only sums and differences, and not necessarily all four numbers, 1, 3, 9 and 27 will make all numbers from 0 to 40.

If your using exponents, brackets and numbers with 2's as their digits; then it would have to be:222 (squared) = 49284This is the lowest number you can get to using four 2's and exponents.BUT if your using operations like +, -, x, etc. then:(2-2) + (2-2) = 0would be more suited, as 0 is the lowest number.You can mix and match all you want with this one, but 0 has to be your answer)

You can't.

Using 1, 2, and 3, you can make 27 whole numbers.

Twelve of them.

9

Google "Four Fours" and you will find a number of solutions, presented more comprehensively than we can.

2,3,5and7

28,29,30,31.

Eight and four.

A binary operation is one which takes two numbers and combines them into one. +,-,* and / are all binary operations. If you start with 4 numbers and apply one binary opeartion (to two of the numbers) you are left with three. After two binary operations you are left with two numbers and after three binary operations you are left with only one number. You cannot, therefore, carry out the fourth binary operation if you start with four numbers.