JB MATH

Which of the following numbers is the smallest?
(A) 0,0000001;
(B) 9 ^-8
(C) (0, 1)^0,1 ;
(D) √0,00001;
(E) (0, 0001)^2 .

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Here we go again...

It takes one minute to cut a chain link, and it takes 5 minutes to weld it again. Having 10 links linked in pairs, how many minutes does it take (at least) to form an open chain of 10 links?
(A) 30;;
(B) 26;
(C) 24;
(D) 18;
(E) 12.

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📚 Source: La Matematica che Trasforma il Mondo - RBA

Get that s**t out of here asap

What is the percentage of the shaded square in the figure?
(A) 12,5%;
(B) 25%;
(C) 20%;
(D) 18,75;
(E) 16,66%.

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So true 😅

The number 1 is written on the board. The only move allowed is to erase the number written on the board and replace it with either its double or its square. What is the biggest number you can get in 8 moves?
(A) 4^7;
(B) 2^8;
(C) 8^8;
(D) 2^128;
(E) 2^64.
Let us know in the comments!

Let us know what you think in the comments!

📚 Source: La Matematica che Trasforma il Mondo - RBA

such useful information😂