Double 45 is the result of multiplying the number 45 by 2. Therefore, double 45 is equal to 90. In mathematical terms, the calculation can be expressed as 45 x 2 = 90.
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it is 90!!
There are 45 such numbers.
353, each time you double the number then take 1 away.
Double 10 is 2 x 10 which is 20, so now, just add all these numbers… 10 10 20 45 15. The answer is 100. This is actually the answer to the old riddle… What is 10, 10, double 10, 45, 15? Others say it’s the fastest way to count to 100! Still others say the fastest way to count to 100 is… 99 cows and a bobtailed bull!
45 * 10 = 45 + 45 + 45 + 45 + 45 + 45 + 45 + 45 + 45 + 45 = 450
It isn't. 45-45 = 0.It isn't. 45-45 = 0.It isn't. 45-45 = 0.It isn't. 45-45 = 0.