5 without using 1 = 5
y2 * y-5 = y2 / y5 = 1/y3
290... without using a calculator !
It can be done by: (9-5) times 6 times 1 = 24
The expression (2 \times 3 \times 3 \times 3 \times 5) can be rewritten using exponents as (2^1 \times 3^3 \times 5^1). This indicates that 2 is raised to the power of 1, 3 is raised to the power of 3, and 5 is raised to the power of 1.
1
Today
You can do 99+1 or (2*5)2
Today
You can make 37 using the numbers 1, 3, 5, and 7 by utilizing multiplication and addition. For example, you can calculate it as follows: ( (7 \times 5) + (3 \times 1) = 35 + 3 = 38 ). However, to achieve exactly 37, you need to adjust by using subtraction: ( (7 \times 5) + 1 - 3 = 35 + 1 - 3 = 33 ). This does not yield 37, indicating that it may not be possible to reach 37 using these specific numbers with standard operations.
Divide both sides by -5 x = -2
Possible 5 digit combinations using 5 digits only 1 time is 5! or 5*4*3*2*1 or 120. Using 5 digits where numbers can be used 5 times is 55 or 3125.
1, 3, 5, 9, 15, 45 -1, -3, -5, -9, -15, -45